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Mineralpedia Details for Terlinguaite

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Terlinguaite

Terlinguaite

Formula
Hg2OCl 
Crystal System
Monoclinic 
Crystal Habit
Striated, Prismatic 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
yellow, greenish yellow, brown, olive green 
Streak
light yellow 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-3 
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Terlinguaite from Terlingua dist., Brewster Co., Texas, United States

Terlinguaite
            from Terlingua dist., Brewster Co., Texas, United States
Special Info
Type Locality,XRD Confirmed

The grey, glassy crystals to 5mm in the red matrix are excellent Terlinguaite. Associated with these crystals are yellow, much smaller crystal grains of Eglestonite. Both minerals were verified with XRD.

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