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scapolite

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scap·o·lite  (skp-lt)
n.
Any of a series of variously colored, often fluorescent mineral silicates of aluminum, calcium, and sodium. Also called wernerite.

[Latin scpus, stalk; see scape1 + -lite (from the prismatic shape of its crystals).]

scapolite [ˈskæpəˌlaɪt]
n
(Earth Sciences / Minerals) any of a group of colourless, white, grey, or violet fluorescent minerals consisting of sodium or calcium aluminium silicate, carbonate, and chloride in tetragonal crystalline form. They occur mainly in impure limestones and pegmatites Also called wernerite
[from German Skapolith, from Greek skapos rod + -lite]


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Last year, scientists reported spectral evidence of a mineral called scapolite, which might have formed on Mars from the heat-processing of carbonate rock by volcanic activity (SN: 11/12/88, p.
A combination of well-characterized minerals and synthetic materials were used to calibrate for EPMA, including SMS scapolite (S and Cl), Corning W glass (6) (Co), SMS gahnite (Zn), SMS cassiterite (Sn), SMS strontianite and Corning X glass (Sr).
The researchers suggest that one possible source of scapolite on Mars could have been carbon dioxide combined with calcium plagioclase, probably produced by volcanoes in the ancient Martian past.
 
 
 
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