Science Fair Project Dictionary
Albite
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Pronunciation
- al' bite
Etymology
- From the Latin albus (white), the common color of the mineral.
Noun
- A plagioclase feldspar, the first member of the Albite-Anorthite solid solution series. Primarily a mineral of plutonic rocks, also found in pegmatites. When Albite substitutes for a potassium feldspar in granite, the rock is called quartz monzonite .
Chemical composition
- Sodium aluminum silicate, Failed to parse (PNG conversion failed; check for correct installation of latex, dvips, gs, and convert): NaAlSi_3O_8
Physical properties
- Moh's Hardness: 6.0
- Specific gravity: 2.63
- Color: white, sometimes with a bluish cast
- Luster: glassy
- Fracture: conchoidal
- Cleavage: two good at about 94ยบ to each other
- Habit: Triclinic - pinacoidal. Usually twinned and striated. The striations are visible to the naked eye, and are characteristic of plagioclase feldspars in general and Albite in particular.
Related words
10-26-2009 07:45:12
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details