- refraction of cleavage
- 劈理折射
English-Chinese geology dictionary (英汉地质大词典). 2013.
English-Chinese geology dictionary (英汉地质大词典). 2013.
Cleavage (geology) — This article is about rock cleavage, for cleavage in minerals see Cleavage (crystal) Different ways in which a cleavage can develop in a sedimentary rock. A: original sedimentary rock; B: pencil cleavage; C: diagenetic foliation (parallel to… … Wikipedia
Calcite — A one inch Calcite Rhomb that shows the Double image refraction property. General Category Carbonate mineral … Wikipedia
Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… … Wikipedia
calcite — calcitic /kal sit ik/, adj. /kal suyt/, n. one of the commonest minerals, calcium carbonate, CaCO3, found in a great variety of crystalline forms: a major constituent of limestone, marble, and chalk; calc spar. [1840 50; CALC + ITE1] * * * Most… … Universalium
Nambulite — Gem quality nambulite from the Kombat Mine, Grootfontein District of Namibia (size: 0.7 x 0.6 x 0.4 cm) General Category Inosilicate … Wikipedia
Enstatite — Infobox mineral name = Enstatite category = Silicate mineral boxwidth = boxbgcolor = imagesize = caption = formula = Mg2Si2O6 molweight = color = White, grey, green, yellow or brown colorless in thin section. habit = Lamellar, fibrous, or massive … Wikipedia
Zussmanite — K(Fe++,Mg,Mn)13 [AlSi17O42] (OH)14 is a hydrated iron rich silicate which was found in 1960 by Stuart Olof Agrell, in the Laytonville quarry, Mendocino County, California. Zussmanite is named in honor of Jack Zussman, Head of the University of… … Wikipedia
Precious Stones in the Bible — Precious Stones in the Bible † Catholic Encyclopedia ► Precious Stones in the Bible Precious stones are stones remarkable for their colour, brilliancy, or rarity. Such stones have at all times been held in high esteem everywhere,… … Catholic encyclopedia
Nepheline — General Category Silicate mineral Chemical formula (Na,K)AlSiO4 … Wikipedia
Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) … Wikipedia
Chalcophyllite — from the Ting Tang Mine, Carharrack, Cornwall, England. Photo by Rob Lavinsky General Category Arsenate minerals … Wikipedia