mineralogical hardness

См. также в других словарях:

• Mohs scale of mineral hardness — The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and… …   Wikipedia

• Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring …   Wikipedia

• geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …   Universalium

• Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …   Wikipedia

• Chrysotile — Not to be confused with Chrysolite. Chrysotile Chrysotile serpentine from the Salt River area, Arizona General Category …   Wikipedia

• Mineralogy — is the study of chemistry, crystal structure, and physical (including optical) properties of minerals. Specific studies within mineralogy include the processes of mineral origin and formation, classification of minerals, their geographical… …   Wikipedia

• Baryte — (barite) Baryte crystals on dolomite from Cumbria, England (size: 5.4×4.6 cm) General Category Sulfate mineral, barite group …   Wikipedia

• Julgoldite — Infobox mineral name = Julgoldite category = Silicate mineral boxwidth = boxbgcolor = imagesize = caption = formula = (Ca,Mn)2(Fe2+,Fe3+,Mg)(Fe3+,Al)2(SiO4)(Si2O7)(OH)2(H2O) molweight = color = Black to greenish olive habit = blades or prisms.… …   Wikipedia

• Gold — This article is about the metal. For the color, see Gold (color). For other uses, see Gold (disambiguation). platinum ← gold → mercury …   Wikipedia

• Atheneite — is a rare metallic compound commonly associated with palladium–gold deposits. It was discovered in 1974 by A.M. Clark, A.J. Criddle, and E.E. Fejer in the Minas Gerais mine in the town of Itabira, Brazil (Clark, 1974). Atheneite was also found in …   Wikipedia

• Tschermakite — The endmember hornblende Tschermakite Ca2(Mg,Fe2+)3Al2(Si6Al2)O22(OH)2 is a calcium rich monoclinic amphibole mineral. It is frequently synthesized along with its ternary solid solution series members Tremolite and Cummingtonite so that the… …   Wikipedia