General Information:
Chemical Formula:
Fe+++AsO4·2(H2O)
Composition:
(Molecular Weight = 230.80 gm)
Iron 24.20 % Fe
Arsenic 32.46 % As
Hydrogen 1.75 % H
Oxygen 41.59 % O
Empirical Formula:
Fe3+(AsO4)·2(H2O)
Name Origin:
From the Greek skorodon - meaning "garlic."
Physical Properties:
Cleavage:
[120] Imperfect, [100] Poor, [010] Poor
Color:
yellowish green, pale leek green, liver brown, blue green, or black green.
Density:
3.1 - 3.3, Average = 3.2
Diaphaniety:
Subtransparent to translucent
Habits:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Granular - Generally occurs as anhedral to subhedral crystals in matrix., Fibrous - Crystals made up of fibers.
Hardness:
3.5-4 - Copper Penny-Flourite
Luminescence:
None.
Luster:
Vitreous - Greasy
Streak:
greenish white
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