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Mineralpedia Details for Calomel

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Calomel

Calomel

Formula
HgCl 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Earthy 
Cleavage
Poor, Poor, None 
Luster
Adamantine - Resinous 
Color
white, yellowish gray, gray, yellowish white, brown 
Streak
pale yellowish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Sectile 
Hardness
1.5-2 
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Calomel from Mariposa mine, Terlingua dist., Brewster Co., Texas, United States

Calomel
            from Mariposa mine, Terlingua dist., Brewster Co., Texas, United States
Special Info
Fluorescent

Rich specimen full of white to colorless Calomel crystals less than 1mm but also in larger aggregates to 5mm. The Calomel is highly fluorescent as seen in the photos. Exceptional specimen.

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Calomel from Moschellandsberg, Palatinate, Rhineland-Palatinate, Germany

Calomel
            from Moschellandsberg, Palatinate, Rhineland-Palatinate, Germany

Calomel is all over the large vug as greasy, waxy looking yellow masses and is associated with red Cinnabar.

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