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Mineralpedia Details for Hydrozincite

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Hydrozincite

Hydrozincite

Named for its chemical components of water (hydro) and zinc. Hydrozincite is a widespread and common mineral that can be found in oxidized zinc deposits, typically at the expense of sphalerite and smithsonite, and can also be found in mine workings and caves as incrustations. Localities for good specimens of Hydrozincite include in Austria, Italy, Spain, the United States, Mexico, Iran, Australia, and Bulgaria. Hydrozincite will fluoresce pale blue to lilac under ultraviolet light.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/hydrozincite.pdf

Formula
Zn5(CO3)2(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Bladed, Stalactitic, Massive - Fibrous 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
white, yellowish white, grayish white, pinkish white, bluish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-2.5 
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Hydrozincite from Mina Ojuela, Mapimi, Durango, Mexico

Hydrozincite
            from Mina Ojuela, Mapimi, Durango, Mexico Micro, snow white sprays to 1mm covering much of matrix. O
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Hydrozincite from Downeyville Lead mine, Nye Co., Nevada, United States

Hydrozincite
            from Downeyville Lead mine, Nye Co., Nevada, United States
Special Info
EDS Confirmed

Snow white bladed crystals in 2mm clusters.

Click thumbnail images for larger view.

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