Realgar

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Orpiment, Realgar
Getchell Mine, Humbolds Co. Nevada, USA

Item-No.: MINS1136
Price: 65.00 EUR 
Orpiment, Realgar
Cavnic, Munti Metalifory, Romania

Item-No.: MINS1613
Price: 38.00 EUR 
Orpiment, Realgar
Getchell Mine, Humbolds Co. Nevada, USA

Item-No.: MINS2471
Price: 75.00 EUR 
Realgar, Orpiment
Cavnic, Munti Metalifory, Romania

Item-No.: MINS732
Price: 28.00 EUR 
Realgar, Ulexite
Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA

Item-No.: MINS2110
Price: 7.00 EUR 

Synonyms:  Eolite, Realgarite, Red Arsenic, Red Orpigment, Risigallo, Risigallum, Ruby Sulphur, Sandaracha
Classification:  Sulfides
Chemical formula:  AsS
Crystal system:  Monoclinic
Density (g/cm3):  3,56 measured , 3,59 calculated
Tenacity:  Sectile, slightly brittle
Cleavage:  Good on {010}, less good on {100}, {101}, {120}, {110}
Fracture:  Sub-conchoidal
Hardness (Mohs):  1,5 - 2
Colour:  Dark red to orange-red
Lustre:  Resinous, greasy
Streak:  Orange-red to red
Warning:  Realgar is toxic! Decomposes to orange pararealgar with exposure to light
Application:  Pyrotechnic article, pesticide production

 

 


 

 
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Dr. Petr Zajicek
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