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Dominant species
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Jarosite
Chemical
Formula
KFe3+3(OH)6(SO4)2
Species
Sulfates
Crystal
System
Trigonal
Mohs
Scale
2-3
Specific
Gravity
2.9-3.3
Color
Amber yellow or dark brown
Streak
light yellow
Luster
Sub-Adamantine, Vitreous, Resinous
Refractive
Index
n = 1.815 - 1.820 n = 1.713 - 1.715
Diaphaneity
Translucent
Cleavage
Distinct/GoodDistinct on .
Fracture
Irregular/Uneven, Conchoidal
Crystal Habit:Crystals are usually pseudocubic or tabular, also as granular crusts, nodules, fibrous masses or concretionary.
Geological Setting:A secondary mineral found in the oxidized zones of sulfide deposits, forming by the reaction of dilute sulfuric acid in ground water, derived from the oxidation of pyrite, with gangue minerals and wall rock in the deposits.
Jarosite6046
Jarosite6046
Jarosite6045
Jarosite6045
Jarosite6043
Jarosite6043
Jarosite6041
Jarosite6041
Jarosite6039
Jarosite6039
Jarosite6037
Jarosite6037
Jarosite6035
Jarosite6035
Jarosite6034
Jarosite6034
Jarosite6033
Jarosite6033
Jarosite6027
Jarosite6027
Jarosite6022
Jarosite6022
Jarosite6019
Jarosite6019
Jarosite6018
Jarosite6018

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