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searching for Fracture (mineralogy) 64 found (840 total)

Lode (599 words) [view diff] no match in snippet view article find links to article

lode is a deposit of metalliferous ore that fills or is embedded in a fracture (or crack) in a rock formation or a vein of ore that is deposited or embedded

Druse (geology) (59 words) [view diff] no match in snippet view article

In geology and mineralogy, druse is a crystal habit represented by the coating of fine crystals on a rock fracture surface, or vein or within a vug or

Abnormal grain growth (889 words) [view diff] no match in snippet view article find links to article

in a densified matrix. This microstructure has the potential to improve fracture toughness by impeding the propagation of cracks. Abnormal grain growth

List of mineral tests (610 words) [view diff] no match in snippet view article find links to article

can help to identify the mineral type. This approach is used widely in mineralogy, ore geology and general geological mapping. The following tests are some

Geodynamics (1,791 words) [view diff] no match in snippet view article find links to article

measuring magnetic fields, gravity, and seismic waves, as well as the mineralogy of rocks and their isotopic composition. Methods of geodynamics are also

Gemology (1,282 words) [view diff] no match in snippet view article find links to article

and artificial gemstone materials. It is a geoscience and a branch of mineralogy. Some jewelers (and many non-jewelers) are academically trained gemologists

Gemstone (6,909 words) [view diff] no match in snippet view article find links to article

birefringence, dispersion, specific gravity, hardness, cleavage, and fracture. They may exhibit pleochroism or double refraction. They may have luminescence

Prehnite (530 words) [view diff] no match in snippet view article find links to article

Jeffrey Mine in Asbestos, Quebec, Canada. Prehnite is brittle with an uneven fracture and a vitreous to pearly luster. Its hardness is 6.5, its specific gravity

Samsonite (mineral) (145 words) [view diff] no match in snippet view article

metallic black to steel black with no cleavage and a brittle to conchoidal fracture. In thin fragments it appears reddish brown in transmitted light and also

Petrography (1,828 words) [view diff] no match in snippet view article find links to article

petrographic microscope. The detailed analysis of minerals by optical mineralogy in thin section and the micro-texture and structure are critical to understanding

Felsite (263 words) [view diff] no match in snippet view article find links to article

textures. Klein, Cornelis and Hurlbut, Cornelius S. (1986), Manual of Mineralogy, Wiley, p. 484 ISBN 0-471-80580-7 McDonnell, S.; Troll, V. R.; Emeleus

Mcgillite (95 words) [view diff] no match in snippet view article find links to article

portion of quartzite and argillite within a metamorphosed lead-zinc deposit. It is pink in color. Handbook of Mineralogy DakotaMatrix entry Mindat.org entry

Solid (5,362 words) [view diff] no match in snippet view article find links to article

value of fracture toughness, the basic principles of fracture mechanics suggest that it will most likely undergo ductile fracture. Brittle fracture is very

East Pacific Rise (981 words) [view diff] no match in snippet view article find links to article

Propagating rift Ring of Fire General citations for named fracture zones are at page Wikipedia:Map data/Fracture zone and specific citations are in interactive detail

History of mineralogy (2,794 words) [view diff] no match in snippet view article find links to article

Early writing on mineralogy, especially on gemstones, comes from ancient Babylonia, the ancient Greco-Roman world, ancient and medieval China, and Sanskrit

Neuil mine (773 words) [view diff] no match in snippet view article find links to article

within this zone are sheared. Secondary mineralisations cover the central fracture surfaces and the mylonitic edges. In the core region geodes of quartz and

Granite (6,508 words) [view diff] no match in snippet view article find links to article

can be predominantly white, pink, or gray in color, depending on their mineralogy. The alkali feldspar in granites is typically orthoclase or microcline

Gilalite (177 words) [view diff] no match in snippet view article find links to article

metamorphic phase in a calc-silicate and sulfide skarn deposit. It occurs as fracture fillings and incrustations associated with diopside crystals. It is commonly

Macdonaldite (193 words) [view diff] no match in snippet view article find links to article

webmineral.com". "Macdonaldite at mindat.org". "Macdonaldite". Handbook of Mineralogy Alfors, J.T., Stinson, M.C., Matthews, R.A., and Pabst, A. (1965) Seven

Deformation mechanism (4,137 words) [view diff] no match in snippet view article find links to article

Most fracture grow into faults. However, the term fault is only used when the fracture plane accommodate some degree of movement. Fracturing can happen

Verneuil method (1,797 words) [view diff] no match in snippet view article find links to article

axis to relieve internal pressure, otherwise the crystal will be prone to fracture when the stalk is broken due to a vertical parting plane. When initially

Clinohedrite (240 words) [view diff] no match in snippet view article find links to article

crystallizes in the monoclinic system and typically occurs as veinlets and fracture coatings. It is commonly colorless, white to pale amethyst in color. It

Pentagonite (125 words) [view diff] no match in snippet view article find links to article

symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616. Handbook of Mineralogy Mindat.org

1814 in science (631 words) [view diff] no match in snippet view article find links to article

för mineralogien ("An attempt to establish a pure scientific system of mineralogy, by the application of the electro-chemical theory and the chemical proportions")

Volcanic rock (2,430 words) [view diff] no match in snippet view article find links to article

their chemistry when dealing with their origin. The fact that different mineralogies and textures may be developed from the same initial magmas has led petrologists

Lawsonite (1,436 words) [view diff] no match in snippet view article find links to article

gravity of 3.09. It has perfect cleavage in two directions and a brittle fracture. Not to be confused with Larsonite, a fossiliferous jasper mined in Nevada

Hunter Fracture Zone (698 words) [view diff] no match in snippet view article find links to article

lavas from the Hunter ridge-Hunter fracture zone. Evidence from glass, olivine and spinel compositions". Mineralogy and Petrology. 47 (2): 149–69. Bibcode:1993MinPe

Tranquillityite (1,252 words) [view diff] no match in snippet view article find links to article

"tranquillityite" was proposed and later accepted by the International Mineralogical Association. It was later found in lunar rock samples from all Apollo

Piypite (185 words) [view diff] no match in snippet view article find links to article

doi:10.1180/mgm.2021.43. S2CID 235729616. Piypite on Mindat.org Piypite in the Handbook ov Mineralogy Piypite data on Webmineral Mineralienatlas v t e

Jolliffeite (322 words) [view diff] no match in snippet view article find links to article

be determined by its relief. Jollifeite was discovered in 1991 within a fracture zone near a contact of an intrusive peridotite with dolomite from the Fish

Chert (4,233 words) [view diff] no match in snippet view article find links to article

p. 207. W.L. Roberts, T.J. Campbell, G.R. Rapp Jr., "Encyclopedia of Mineralogy, Second Edition", 1990. ISBN 0-442-27681-8 R.S. Mitchell, "Dictionary

René Just Haüy (2,637 words) [view diff] no match in snippet view article find links to article

was showing me, and which formed part of his mineralogical collection. The prism had a single fracture along one of the edges of the base, by which it

Blue Ridge Ophiolite (751 words) [view diff] no match in snippet view article find links to article

conchoidal fracture. In thin section the most abundant and easiest to identify mineral is olivine, about 60% to 80% of the thin section. The mineralogy of these

Concretion (6,187 words) [view diff] no match in snippet view article find links to article

S2CID 250900204. Hoffmann, Viktor; Stanjek, Helge; Murad, Enver (December 1993). "Mineralogical, magnetic and mössbauer data of symthite (Fe9S11)". Studia Geophysica

Hardness (2,476 words) [view diff] no match in snippet view article find links to article

another. Scratch hardness is the measure of how resistant a sample is to fracture or permanent plastic deformation due to friction from a sharp object. The

Pabstite (653 words) [view diff] no match in snippet view article find links to article

freshly broken. Large amounts of pabstite were found in Santa Cruz as fracture filling and disseminated grains in recrystallized siliceous limestones

Cesanite (862 words) [view diff] no match in snippet view article find links to article

analogue – A comparison. American Mineralogist, 87, 715-720. Handbook of Mineralogy Mindat.org Webmineral data Tazzoli V., (1983) The Crystal-structure of

Okavango Dyke Swarm (1,805 words) [view diff] no match in snippet view article find links to article

number of separate stages. They contain complex trending of shear zones and fracture networks. The overlying Jurassic volcanic rocks are mainly basaltic lava

Barringer Hill (1,197 words) [view diff] no match in snippet view article find links to article

Barringer Hill is a geological and mineralogical site in central Texas. It lies on the former west side of the Colorado River, beneath Lake Buchanan,

Barringer Hill (1,197 words) [view diff] no match in snippet view article find links to article

Barringer Hill is a geological and mineralogical site in central Texas. It lies on the former west side of the Colorado River, beneath Lake Buchanan,

Deep Carbon Observatory (2,433 words) [view diff] no match in snippet view article find links to article

R. (2013). "Carbon mineral evolution". Reviews in Mineralogy & Geochemistry. 75 (1). Mineralogical Society of America: 79–107. Bibcode:2013RvMG...75.

Kurnakovite (241 words) [view diff] no match in snippet view article find links to article

in dense aggregates. Kurnakovite has distinct cleavage and a conchoidal fracture. Its tenacity is brittle and it ranges between 2.5 – 3 on the Mohs hardness

Glances (1,814 words) [view diff] no match in snippet view article find links to article

glances was formed spontaneously by miners and mining practitioners, but mineralogy as a science recognized this group until the mid-twentieth century. However

Gabronite (706 words) [view diff] no match in snippet view article find links to article

Gabronite occurs massive, and is of a bluish or greenish grey colour; its fracture is lamellar, it is translucent on the edges, and hard enough to scratch

Gabronite (706 words) [view diff] no match in snippet view article find links to article

Gabronite occurs massive, and is of a bluish or greenish grey colour; its fracture is lamellar, it is translucent on the edges, and hard enough to scratch

Arabia Terra (3,686 words) [view diff] no match in snippet view article find links to article

subduction of Mars lowlands under Arabia Terra during Noachian times. Regional fracture patterns were also explained in this manner, and the rotational instability

Paramontroseite (1,885 words) [view diff] no match in snippet view article find links to article

Handbook of Mineralogy, X-ray Powder Pattern. Paramontroseite – Handbook of Mineralogy, Chemistry. Paramontroseite – Handbook of Mineralogy, Optical Properties

Dislocation (5,789 words) [view diff] no match in snippet view article find links to article

and the energy required to move them is less than the energy required to fracture the material. A dislocation is a linear crystallographic defect or irregularity

Loess (3,850 words) [view diff] no match in snippet view article find links to article

highly porous and have vertical capillaries that permit the sediment to fracture and form vertical bluffs. Loesses are homogeneous; porous; friable; pale

Volcanism (4,686 words) [view diff] no match in snippet view article find links to article

2006). "The constitution and structure of the lunar interior". Reviews in Mineralogy and Geochemistry. 60 (1): 221–364. Bibcode:2006RvMG...60..221W. doi:10

Seatearth (1,196 words) [view diff] no match in snippet view article find links to article

horizons. In the better-developed paleosols, significant alteration of the mineralogy, i.e. leaching and translocation of alkali and alkaline earth elements

Ajoite (882 words) [view diff] no match in snippet view article find links to article

the Wayback Machine. Mineral Galleries Gaines, et al (1997) Dana's New Mineralogy, Eighth Edition. Wiley Ajoite. Mindat.org (2011-08-16). Retrieved on 2011-10-09

Geology (9,583 words) [view diff] no match in snippet view article find links to article

the processes that have shaped that structure. Geologists study the mineralogical composition of rocks in order to get insight into their history of formation

William Otis Crosby (744 words) [view diff] no match in snippet view article find links to article

research covered such areas as mineralogy, igneous rocks, glaciology, physical geography, metamorphism, economic geology, fracture disturbance and tectonics

Monazite geochronology (7,009 words) [view diff] no match in snippet view article find links to article

in cooling geochronological and petrological systems. Contributions to Mineralogy and Petrology, 40(3), 259–274. Cherniak, D. J., Watson, E. B., Grove,

Comet dust (4,001 words) [view diff] no match in snippet view article find links to article

micrometers, a size not arbitrary but observed as the porous aggregates tend to fracture or compact. Larger particles are micrometeoroids, not dust. In the absence

Pitcairn hotspot (867 words) [view diff] no match in snippet view article find links to article

attribute Pitcairn hotspot to upwelling at the western end of the Easter Fracture Zone. Multibeam bathymetry shows that the two largest seamounts, Adams

Mining engineering (3,814 words) [view diff] no match in snippet view article find links to article

numerical analysis, statistics geoscience; geochemistry, geophysics, mineralogy, geomatics mechanics; rock mechanics, soil Mechanics, geomechanics thermodynamics;

Pitcairn hotspot (867 words) [view diff] no match in snippet view article find links to article

attribute Pitcairn hotspot to upwelling at the western end of the Easter Fracture Zone. Multibeam bathymetry shows that the two largest seamounts, Adams

Peridotite (3,793 words) [view diff] no match in snippet view article find links to article

ISBN 9780080437514. Nesse, William D. (2000). Introduction to mineralogy. New York: Oxford University Press. pp. 306–310. ISBN 9780195106916. Nesse

Mining engineering (3,814 words) [view diff] no match in snippet view article find links to article

numerical analysis, statistics geoscience; geochemistry, geophysics, mineralogy, geomatics mechanics; rock mechanics, soil Mechanics, geomechanics thermodynamics;

Mare Tyrrhenum quadrangle (3,324 words) [view diff] no match in snippet view article find links to article

evidence of hydrothermal processes that occurred after impact. Impacts fracture rock and create enormous amounts of heat. On Mars, this heat can cause

Moeraki Boulders (1,392 words) [view diff] no match in snippet view article find links to article

[citation needed] Detailed analysis of the fine-grained rock using optical mineralogy, X-ray crystallography, and electron microprobe has determined that the

Boltwoodite (237 words) [view diff] no match in snippet view article find links to article

doi:10.1180/mgm.2021.43. S2CID 235729616. Mineralienatlas Handbook of Mineralogy Mindat.org Webmineral data Burns, Peter (1998). "The Structure of Boltwoodite