Halite density

Experimental Density: 2.165 g/mL Alfa Aesar 10862, 11019, 12314, 13683, 35616, 35716, 42544, 43631, 87605, A12313: 2.165 g/mL Wikidata Q2314: 2.165 g/mL / 25 °C Kaye & Laby (No longer updated) Miscellaneous. Appearance: colourless crystals or white powder OU Chemical Safety Data (No longer updated) More details:

In the blue/gray halite crystal below, the cleavages created a cube, and additional cleavage traces can be seen as fine cracks. Figures 3.2 and 3.10 also show halite. The cleavage cannot be seen in Figure 3.2 but is very clear in Figure 3.10. 3.66 Halite 3.67 Halite 3.68 Calcite showing rhombohedral cleavage. Like halite, calcite has three good ...Fire was pyrite’s most prominent gift to human society. Sparks are created when pyrite is struck against metal or a hard surface and this was one of the earliest methods humans discovered to create flame. Pyrite’s name comes from the Greek phrase, ‘pyrite lithos,’ which means ‘stone which strikes fire.’. Its brilliant metallic ...Jan 22, 2020 ... Rock salt, 2.5–2.6. Sandstone, 2.2–2.8. Shale, 2.4–2.8. Slate, 2.7–2.8. As you can see, rocks of the same type can have a range of densities.Masses and volumes of powders were measured and porosities were calculated from these data, using calcite and halite density values. Both for 70 and 100 wt.% halite mixtures, the value of porosities 47±1% was obtained. This value is high as pointy grains with edges hooked into each other.Occurrence Halite cubes from the Stassfurt Potash Deposit, Saxony-Anhalt, Germany (size: 6.7 × 1.9 × 1.7 cm) Halite dominantly occurs within sedimentary rocks where it has formed from the evaporation of seawater or salty lake water.

Density-sonic crossplot . Two versions of the density-sonic crossplot also exist, one using the Wyllie time average equation and the other the Raymer-Hunt-Gardner equation for the sonic porosity relationship. These are used typically for binary mixtures of sandstone, limestone, or dolomite with gypsum, trona, salt, or sylvite. This plot is not ...It appears that the seismic velocity and density are inversely related, but the denser rocks are characterized by higher velocities compared to lighter rocks because the density also depends on κ and μ. The halite with low density (1.8 g/cc) and high V P (4.5 km/s) shows an exception. Generally velocities and densities increase with depth.Other Names: table salt, halite, sodium chloric Chemical Formula: NaCl Molar Mass: 58.44 grams per mole Appearance: Pure sodium chloride forms odorless, colorless crystals. ... Density: 2.165 g/cm 3. Melting Point: 801 °C (1,474 °F; 1,074 K) Like other ionic solids, ...Of the several properties used for identifying minerals, it is good to consider which will be most useful for identifying them in small grains surrounded by other minerals. Figure 3.6.1 3.6. 1: The rover Curiosity drilled a hole in this rock from Mars, and confirmed the mineral Hematite, as mapped from satellites. Since density is probably the most critical factor in determining acoustic velocity, the ∆Tma of a thick halite unit tends to be relatively constant over a wide depth range. For pure halite, the interval transit time is 68 µsec/ft (14,625 ft/sec).The density of halite is 2323 g L −1, and a saturated brine is expected to have a density of 1200 kg m −3 at atmospheric conditions. Table 1 Concentrations of ions in a saturated NaCl-brine based on the fractions for the Prairie Evaporite. Full size table. Model conceptualization.

The Mercia Mudstone Group in the UK is characterised by a sequence of brown and red-brown, calcareous clays and mudstones, with occasional beds of impersistent green siltstone and fine-grained sandstone. It was deposited between 200 and 250 million years ago in the Triassic period. It underlies much of central and southern England and is the …Halite cementation is a major exploration risk in hydrocarbon reservoirs.Halite-cemented reservoir zones are characterized by extremely low porosity and permeability due to partial or complete occlusion of the pore space.Despite being a key process that affects the quality of the productive formation, a quantitative analysis of the physical processes …Since density is probably the most critical factor in determining acoustic velocity, the ∆Tma of a thick halite unit tends to be relatively constant over a wide depth range. For pure halite, the interval transit time is 68 µsec/ft (14,625 ft/sec).This mineral can be formed as well-formed coarse-sized euhedral or granular crystals. The mineral has transparent appearance, vitreous luster and white streak. The relative hardness of halite is 2.5, and density is 2.17 g/cm 3. Global Distribution. Halite is distributed in the following places: Hallstadt, Salzburg, and Hall, near Innsbruck, TirolHalite is mainly a sedimentary mineral that usually forms in arid climates where ocean water evaporates. However, many inland lakes such as the Great Salt Lake of North America and the Dead Sea between Jordan and Israel are also locations where halite is forming today. Over geologic time, several enormous salt deposits have been formed when ... both caused by obliquely breaking waves and called beach drift. Choose the best answer. The zigzag movement of sand grains along a beach is ________. a. very unusual and seldom occurs. b. caused by obliquely breaking waves. c. called beach drift. d. both caused by obliquely breaking waves and called beach drift.

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NaCl has a cubic unit cell. It is best thought of as a face-centered cubic array of anions with an interpenetrating fcc cation lattice (or vice-versa). The cell looks the same whether you start with anions or cations on the corners. Each ion is 6-coordinate and has a local octahedral geometry. Get your PPE such as made in USA NIOSH-approved N95 ...NaCl ; Color, colorless, white, redish, blue ; Streak color, white ; Cleavage, 3 perfect cleavages, to 90 ; Hardness, 2,5 ; Density, 2,2 ...After the intersections, the fluid inclusions evolve in the two-phase regions (vapor + liquid, liquid + halite, or vapor + halite), and the detailed evolution of fluid pressure, temperature, density, salinity, and phase ratios of the coexisting two phases are systematically discussed.Sodium chloride / ˌ s oʊ d i ə m ˈ k l ɔːr aɪ d /, commonly known as table salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions. Sodium chloride is the salt most responsible for the salinity of seawater and of the extracellular fluid of many multicellular organisms.In its edible form, salt (also known as …brated density measurement can be compensated, and the computed density is approximately equal to the bulk density of the rocks. The apparent bulk o density of halite is approximately 2.05 g/cm in the three Salt Valley drill holes. The density of the interbed and caprock lithologies is a function of the porosity and grain density of the rocks.

b 1 b 2 b 3 A A A A A A C B C C B B Face Centered Cubic Slip Systems FCC (eg. Cu, Ag, Au, Al, and Ni) Slip Planes {111} Slip Directions [110] The shortest lattice vectors are ½[110] and [001] According to Frank’s rule, the energy of a …Natural Salt Salt VARIETIES Hydrohalite - Hydrohalite is not really a variety of Halite, but a very rare, similar mineral. Its chemical formula is "NaCl · 2H2O", which is in essence Halite containing water. It forms only under very unique conditions where the water does not dissolve the salt.11. [10 pts] A seismic wave traveling vertically downward with a velocity of 4,800 m/s in a unit of salt (halite) (density: 2,100 kg/mp) is incident to a horizontal contact with an underlying sandstone unit (density: 2,400 kg/m²). The amplitude of the reflected wave is 2% of the amplitude of the incident wave.The Greek letter ρ (rho) symbolizes density. We usually give the density of a mineral in units of grams/cubic centimeter (gm/cm 3). ... halides (e.g., halite), and sulfates (e.g., gypsum). Silicates (including quartz and all the other common rock-forming silicates) and carbonates (e.g., calcite or dolomite) range from about 2.5 to 3.5. Oxides ...Natural Salt Salt VARIETIES Hydrohalite - Hydrohalite is not really a variety of Halite, but a very rare, similar mineral. Its chemical formula is "NaCl · 2H2O", which is in essence Halite containing water. It forms only under very unique conditions where the water does not dissolve the salt.Salt tectonics, or halokinesis, or halotectonics, is concerned with the geometries and processes associated with the presence of significant thicknesses of evaporites containing rock salt within a stratigraphic sequence of rocks. This is due both to the low density of salt, which does not increase with burial, and its low strength.. Salt structures (excluding …The variation of H 2 O-halite dihedral angle with pressure shows that the excess thickness of the interface is negative in the vapour field and positive in the liquid field. From this we constrain the adsorption density of H 2 O on halite to between 1.0–2.4 molecules of H 2 O per surface unit cell of halite.The density of the halite mineral is relatively low 2.17 g/cm 3 at room temperature. Contrary to other geological materials, the salt rock loses density in depth as the temperature rises 1.90 g/cm 3 at 801 °C, because of the near absence of porosity in this rock and the expansion of the mineral by the increasing temperature, the volume ...halite is the most soluble common mineral, 360 g l −1 at 25 °C ( Langer and Offermann, 1982 ), which is two orders of magnitude higher than gypsum, and three orders of magnitude larger than limestone; •. in contrast to carbonates, salt solubility does not depend on dissolved gases or acidity; •. Formation density Photoelectric absorption Neutron porosity (For more details on these logs, see Basic open hole tools. Also, Difficult lithologies covers logging …The experimental densities obtained for halite-undersaturated WIPP-A and NBT-6 brines are given in table 2 and 3 respectively. For each temperature, these density data were fit to an equation of the following form: i P * £ ajw1 (1) 1-0 where p is the density in g/cm3, w is the wt % of NaCl added to the brinesAnhydrite is 1–3% of the minerals in salt domes and is generally left as a cap at the top of the salt when the halite is removed by pore waters. The typical cap rock is a salt, topped by a layer of anhydrite, topped by patches of gypsum, topped by a layer of calcite. [8]

In evaluating the logs, the first thing to notice is that the only appearance of the density porosity curve is in the anhydrite, where it has a negative porosity reading on the limestone-equivalent scale, caused by its high density of 2.98 gm/cc. Otherwise, the low density of the halite at 2.04 gm/cc results in a limestone-porosity equivalent ...

Largest stone is 1.1 kg. Broken surface shows light-colored clasts in a matrix of light grey material. This grey material contains relatively abundant, to 1-mm, bright blue to purple grains of halite. Density of a 34 g stone comprising the two lithologies is 3.77 g/cm3, determined by the glass bead method.Pure halite has a density of 2160 kg/m 3. When initially deposited, sediments generally have a lower density of 2000 kg/m 3, but with loading and compaction their density increases to 2500 kg/m 3, which is greater than that of salt.Download scientific diagram | Density of solid halite as a function of pressure and temperature in the relevant range for this research from publication: Coupled Processes Modeling in Rock Salt ...Halite is composed of sodium (Na) and chlorine (Cl) ... Because the mantle is plastic, this lower-density material tends to rise toward the surface, and cooler denser mantle material moves in to take its place. Mantle convection creates the traction that can force plates to move around on the surface.As a consequence, gypsum typically occurs as layers associated with limestone, dolostone, shale, and rock salt. As seawater evaporates, gypsum is the first ‘salt’ to be precipitated, followed by anhydrite, halite, and finally sylvite. Usually found with other evaporite and carbonate minerals, such as anhydrite, calcite, dolomite, borax, and ... Halite is a very delicate mineral. It doesn't last long on the earth's surface unless water never touches it. Salt is also physically weak. Rock salt—the stone composed of halite—flows much like ice under quite moderate pressure. The dry Zagros Mountains in the Iranian desert feature some notable salt glaciers.For the pressure interval considered here, the change of halite density with pressure is very close to linear. Therefore, an equation of the form (1) ρ halite = ρ halite 0 + lP with the “0 bar” density (2) ρ halite 0 = l 0 + l 1 T + l 2 T 2 and the parameter l (3) l = l 3 + l 4 e T / l 5 was chosen. Parameter values are listed in Table 3.Sep 9, 2023 · Halite, also known as rock salt or sodium chloride (NaCl), is a naturally occurring mineral that holds significant importance in various aspects of human life. This crystalline mineral is composed of equal parts sodium and chlorine ions and is renowned for its distinctive cubic crystal structure. 2.00 Density is a mass to volume ratio: density=massvolume. First, calculate the volume of the cube. volume= (5.00 cm)3=125 cm3. Next, substitute in the mass and volume and simplify. density=250.0 g125 cm3=2.00gcm3. Study with Quizlet and memorize flashcards containing terms like An object has a mass of 25.0 g and displaces 42.5 mL of water.

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The salt you sprinkle on food is the mineral halite. Silver in jewelry is also a mineral. ... Minerals can be identified by their characteristic physical properties such as crystalline structure, hardness, density, flammability, and color. Crystalline Solid.mindat.org Introduction. Minerals can be identified by their physical characteristics. The physical properties of minerals are related to their chemical composition and bonding. Some characteristics, such as a mineral’s hardness, are more useful for mineral identification. Color is readily observable and certainly obvious, but it is usually less ...Halite deposits are relatively soft rocks that are easily deformed. Under pressure, these deposits flow upwards to form large salt domes that distort the surrounding beds, often …Nov 1, 2019 · After the intersections, the fluid inclusions evolve in the two-phase regions (vapor + liquid, liquid + halite, or vapor + halite), and the detailed evolution of fluid pressure, temperature, density, salinity, and phase ratios of the coexisting two phases are systematically discussed. Halite density (grey bar) is average of core measurements of Wheildon et al. The origins of the solutes that formed the evaporites is important for our later discussion. They may have been supplied via Neotethys/Mediterranean (Bosworth et al., 2005 ; Coleman, 1974 ; Hughes et al., 1992 ; Orszag-Sperber et al., 1998 ).3 perfect cleavages at 90 degrees, high density. Hematite: Metallic or non-metallic luster: Hard to tell, but harder: Red-brown streak. Hornblende: Non-metallic (black) ... Halite: Non-metallic: Softer than glass: 3 perfect cleavages at 90°; Tastes like salt, feels greasy. Gypsum: Non-metallic:the thermal conductivity, density, and sonic velocity are all higher at Site 227. Two sonic velocities for anhydrite are quoted in Clark (1966); these are 4.1 and 5.00 km/s. The mean sonic velocity for the halite (Site 227) is 4.2 ± 0.4 km/s and is considerably smaller than that for the anhydrite. The value quoted in Clark (1966) is 4.4 to 6.5The halite in the Dead Sea core is compacted, with no pores (Kiro et al., 2016), and thus its density is taken as the density of halite. Substituting the values from Table 2 into Eq. (1) yields a potential halite accumulation rate of ∼1 mm/y from the pre-1964 input, with brine seepage and the Jordan River as the major Na + and Cl − sources. ….

Crystals as perfect as could be secured were obtained from a variety of sources, and densities were measured by weighing them when suspended in paraffine ...The experimental densities obtained for halite-undersaturated WIPP-A and NBT-6 brines are given in table 2 and 3 respectively. For each temperature, these density data were fit to an equation of the following form: i P * £ ajw1 (1) 1-0 where p is the density in g/cm3, w is the wt % of NaCl added to the brinesexample, the harness of halite (salt) will always be 2.5 and the specific gravity, or density, will always be 2. Please note that these properties may be different depending on how pure you mineral sample is. Skills: Observing, Investigating, Measuring, Recording, Classifying, Communicating, Calculating Halite slices or ground halite or commercial, fine grained, table salt was left to dissolve in the dilutions of Dead Sea brine (10%, 50%, 70% and 90%, see Table 2). The beakers containing the halite with 200 ml diluted brine were tightly closed with Parafilm, to avoid evaporation losses during the long duration of these experiments (5 to 18 days) …This mineral can be formed as well-formed coarse-sized euhedral or granular crystals. The mineral has transparent appearance, vitreous luster and white streak. The relative hardness of halite is 2.5, and density is 2.17 g/cm 3. Global Distribution. Halite is distributed in the following places: Hallstadt, Salzburg, and Hall, near Innsbruck, TirolThe rock salt crystal structure and the theoretical density of ceramics. Sub Project: Material properties: properties matter. Video Link: The rock salt crystal ...Rock densities and porosities. being in g/cm and or 0.23 when is in m/s or ft/s, respectively. The rule is valid for the major sedimentary rock types, but not for evaporites or carbonaceous rocks (coal, lignite). When a porous rock is saturated with a fluid, its density is given by the equation.Density of molten halite g ml = 1.55 g/ml. Density of molten halite g mm3 = 0.0015 g/mm³. Density of molten halite kg m3 = 1 549 kg/m³. Density of molten halite lb in3 = 0.056 lb/in³. Density of molten halite lb ft3 = 96.7 lb/ft³. See density of molten halite in hundreds of units of density measurement grouped by weight. Halite density, the thermal conductivity, density, and sonic velocity are all higher at Site 227. Two sonic velocities for anhydrite are quoted in Clark (1966); these are 4.1 and 5.00 km/s. The mean sonic velocity for the halite (Site 227) is 4.2 ± 0.4 km/s and is considerably smaller than that for the anhydrite. The value quoted in Clark (1966) is 4.4 to 6.5, Roughly 90% of the original volume of seawater must be evaporated before the concentration of the remaining brine is high enough to precipitate halite. So, significant halite production is usually restricted to arid environments in which the influx of seawater is relatively low compared to the loss by evaporation., The Dead Sea is hypersaline — every liter of water contains over 330 grams of salt, mostly dissolved halite. This is almost ten times more than in sea water. That increases the density of water (1.24 g/cm 3 ) and makes …, In order to identify gemstones, gemologists often measure their density or specific gravity. The following table lists the specific gravity values for a variety of materials commonly found in gem and jewelry collections, as well as for some materials more rarely encountered., The density differences between undersaturated and saturated waters with respect to halite may reach ∼0.2 g cm −3 [Seidell, 1965]. [24] Under the experimental conditions, halite dissolution is a transport-controlled process; i.e., diffusion across the boundary (or molecular diffusion) layer is much slower than dissociation of halite ions at ..., Honeywell Research Chemicals. Chemical name: Sodium chloride Chemical synonyms: Halite Material form: Solid Density (g/cm3): 2.16 Molecular weight: 58.44 Molecular formula: ClNa Chemical purity: =99.0% UN Number: Compare this item., Therefore, these authors inferred that such conditions point to a deep-water basin with normal salinity seawater floating on a higher-density, saturated in gypsum and halite, brine layer. The boundary between the layers ranged from 2000 to 2900 m b.s.l., vertical mixing across the extreme density gradients between brine and overlying …, Sylvite is an economically important mineral and is extensively mined, though it is rarely represented in mineral collections as attractive specimens. It is the most significant form of potash , or potassium-bearing compounds, and has many industrial uses. Sylvite is very similar to Halite, and is ismorphous with it, but it has a more bitter ..., The variation of H 2 O-halite dihedral angle with pressure shows that the excess thickness of the interface is negative in the vapour field and positive in the liquid field. From this we constrain the adsorption density of H 2 O on halite to between 1.0–2.4 molecules of H 2 O per surface unit cell of halite., The variation of H 2 O-halite dihedral angle with pressure shows that the excess thickness of the interface is negative in the vapour field and positive in the liquid field. From this we constrain the adsorption density of H 2 O on halite to between 1.0–2.4 molecules of H 2 O per surface unit cell of halite., Halite density (grey bar) is average of core measurements of Wheildon et al. The origins of the solutes that formed the evaporites is important for our later discussion. They may have been supplied via Neotethys/Mediterranean (Bosworth et al., 2005 ; Coleman, 1974 ; Hughes et al., 1992 ; Orszag-Sperber et al., 1998 )., Halite weighs 2.17 gram per cubic centimeter or 2 170 kilogram per cubic meter, i.e. density of halite is equal to 2 170 kg/m³; at 20°C (68°F or 293.15K) at standard atmospheric pressure. In Imperial or US customary measurement system, the density is equal to 135.469 pound per cubic foot [lb/ft³], or 1.254 ounce per cubic inch [oz/inch³] ., Dec 1, 1974 ... A multiplicity of factors influence seismic reflection coefficients and the observed gravity of typical sedimentary rocks., The PT path moves away from the liquid–vapor–halite curve and into the liquid + halite field where the liquid density and composition are constrained by the halite liquidus. Because the inclusion follows an isochoric–isocompositional path, the internal pressure is uniquely defined for any given temperature (T2, T3, …, T6 in Fig. 1 )., Sylvite is an economically important mineral and is extensively mined, though it is rarely represented in mineral collections as attractive specimens. It is the most significant form of potash , or potassium-bearing compounds, and has many industrial uses. Sylvite is very similar to Halite, and is ismorphous with it, but it has a more bitter ..., Halite is another halide mineral that also shares a similar crystal form with fluorite. The two can be distinguished, however, by their different cleavages, their taste, and their different hardness. Fluorite cleaves in four directions to form octahedrons, while halite has perfect cleavage in three directions to form cubes, so the cleavage ... , Experimental Density: 2.165 g/mL Alfa Aesar 10862, 11019, 12314, 13683, 35616, 35716, 42544, 43631, 87605, A12313: 2.165 g/mL Wikidata Q2314: 2.165 g/mL / 25 °C Kaye & Laby (No longer updated) Miscellaneous. Appearance: colourless crystals or white powder OU Chemical Safety Data (No longer updated) More details:, Bulk Density (Electron Density)=2.27 gm/cc note: Specific Gravity of Analcime =2.27 gm/cc. Fermion Index: Fermion Index = 0.01 Boson Index = 0.99 : Photoelectric: PE Analcime = 1.52 barns/electron U=PE Analcime x rElectron Density= 3.45 barns/cc. Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units) ..., For example, if the density, neutron, and sonic logs are being used, the total number of equations that can be set up is four—one for each of the measured logs and the fourth for the material balance equation ... Halite: …, World wide occurrences where marine evaporite beds occur. Often interbedded with halite. Link to MinDat.org Location Data. Name Origin: From the Greek anhydros, meaning "waterless" (In contrast to Gypsum, which contains water). Name Pronunciation: Anhydrite + Pronunciation : Synonym: Calcium Sulfate : ICSD 16382 : PDF 37-1496 : Anhydrite Image, density-bulk density relation was 25.5 percent where bulk volume was determined by the displacement of water by a previously wetted specimen, but 24.6 percent where bulk volume was determined by mercury displacement. Steinhoff and Mell (1924), using 73 cubes of porous refractory material 2 em along the edges, found that the, Aug 11, 2020 · Most common minerals, such as quartz, feldspar, calcite, amphibole, and mica, have what we call “average density” (2.6 to 3.0 grams per cubic centimetre (g/cm 3)), and it would be difficult to tell them apart on the basis of their density. , Dec 16, 2022 · The Greek letter ρ (rho) symbolizes density. We usually give the density of a mineral in units of grams/cubic centimeter (gm/cm 3). Density varies slightly depending on pressure or temperature, but most minerals have values between 2 and 8 gm/cm 3. Borax, shown in this photo, has density of about 1.8 gm/cm 3, lower than all other common minerals. , A cobble encrusted with halite evaporated from the Dead Sea, Israel (with Israeli ₪1 coin [diameter 18mm] for scale). An evaporite (/ ɪ ˈ v æ p ə ˌ r aɪ t /) is a water-soluble sedimentary mineral deposit that results from concentration and crystallization by evaporation from an aqueous solution. There are two types of evaporite deposits: …, Code, Halite. Mineral Group. Mineral Class, Halide. Formula, NaCl. Occurrence, In evaporites. Electron Density, calculated from formula (Rhoe_Calc), 2.07., Halite - 2.165. Varies wl impurities. Probably no more than. 11100 th the viscosity of ... Note approximate depth at which salt density equals density of ..., Halite Halide NaCl Fluorite Halide CaF 2 Gypsum Sulfate CaSO 4 •2H 2 O The necessary information for identifying these minerals is presented in two often-used formats on the following pages. First, the minerals are tabulated by property. Second, they are arranged into flowcharts. Examine both while working with the specimens, as either one may be, Largest stone is 1.1 kg. Broken surface shows light-colored clasts in a matrix of light grey material. This grey material contains relatively abundant, to 1-mm, bright blue to purple grains of halite. Density of a 34 g stone comprising the two lithologies is 3.77 g/cm3, determined by the glass bead method., Gypsum is an evaporite mineral most commonly found in layered sedimentary deposits in association with halite, anhydrite, sulfur, calcite, and dolomite. Gypsum (CaSO 4. 2H 2 O) is very similar to Anhydrite (CaSO 4). The chemical difference is that gypsum contains two waters and anhydrite is without water. Gypsum is the most common sulfate mineral., Dense fluid inclusions occur in some cumulate halite (Figure 3f). Cumulate halite precipitates at the brine surface or in the water column and then sinks to the brine bottom to form well-sorted ..., , Level16 is an anhydrite-halite mixture. This plot confirms the mineral concentrations indicated by the density vs. neutron cross plot (Fig. 14). POLYHALITE ..., The "density porosity" of the granite has no immediate meaning, scaled as it is to a limestone-porosity system. However, a simple backcalculation of the bulk density measurement gives an estimated density of about 2.6 gm/cc. A more extensive discussion of log properties will be made in the section on Igneous and Metamorphic Rocks.