Zincobotryogen

Zincobotryogen is a hydrous sulfate mineral with formula (ZnMgMn)Fe3+(SO4)2(OH)·7H2O. It forms bright orange red monoclinic prismatic crystals that exhibit a vitreous to greasy luster. Its specific gravity is 2.201 and it has a Mohs hardness of 2.5.It is a rare secondary mineral which forms in arid climates by alteration of other zinc minerals. It was named for its zinc content and it relationship to botryogen. It has been reported from the Xitieshan Mine, Qinghai, Northwest Region, China; Rammelsberg mine, near Goslar, Harz Mountains, Germany; the Bisbee district of Arizona and various mines in Colorado.
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General Information:
 Chemical Formula:
(Zn,Mg,Mn)Fe+++(SO4)2(OH)·7(H2O)
 Composition:
(Molecular Weight = 443.11 gm)
Magnesium 1.65 % Mg
Manganese 1.24 % Mn
Zinc 8.85 % Zn
Iron 12.60 % Fe
Hydrogen 3.41 % H 
Sulfur 14.47 % S 
Oxygen 57.77 % O 
 Empirical Formula:
Zn0.6Mg0.3Mn2+0.1Fe3+(SO4)2(OH)·7(H2O)
 IMA Status:
Approved IMA 1964
Physical Properties:
 Color:
orange red.
 Density:
2.201
 Diaphaniety:
Transparent to Translucent
 Hardness:
2.5 - Finger Nail
 Luster:
Vitreous - Greasy
 Streak:
light yellow
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