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colemanite
[ kohl-muh-nahyt ]
noun
- a mineral, hydrous calcium borate, Ca 2 B 6 O 11 â‹…5±á 2 O, occurring in colorless or milky-white crystals.
colemanite
/ ˈ°ìəʊ±ô³¾É™ËŒ²Ô²¹Éª³Ù /
noun
- a colourless or white glassy mineral consisting of hydrated calcium borate in monoclinic crystalline form. It occurs with and is a source of borax. Formula: Ca 2 B 6 O 11 .5H 2 O
˜yÐÄvlog History and Origins
Origin of colemanite1
˜yÐÄvlog History and Origins
Origin of colemanite1
Example Sentences
COLEMANITE, a hydrous calcium borate, Ca2B6O11 + 5H2O, found in California as brilliant monoclinic crystals.
Priceite and pandermite are hydrous calcium borates with very nearly the same composition as colemanite, and they may really be only impure forms of this species.
Beautifully developed crystals, up to 2 or 3 in. in length, encrust cavities in compact, white colemanite; they are colourless and transparent, and the brilliant lustre of their faces is vitreous to adamantine in character.
The deposits which at present constitute the principal source of domestic borax are not the playa deposits just described, but are masses of colemanite in Tertiary clays and limestones with interbedded basaltic flows.
The salts contained in these deposits are mainly borax, ulexite, and colemanite.
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