Formula: (Tl,K)Fe3(SO4)2(OH)6
Origin of name: From French Doré = gold, and locality; Allchar, Macedonia
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: Golden yellow
Diaphaneity:
Luster:
Habit: Fine-grained earthy masses of pseudocubic to pseudo-octahedral crystals 1-8 µm
Hardness:
Specific gravity:
Cleavage: 1; {0001} distinct
Tenacity:
Streak: Yellow
Synonyms/varieties:
Comments:
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