Formula: Ca2Fe3(AsO4)4(OH).12H2O
Origin of name: locality Daulton Mine, west side of Windy Arm, Tagish lake, Yukon Territory, Canada
Crystal system: Amorphous
Crystal class: -
Twinning:
Unit cell: -
Colour: Brownish black, dark red, reddish brown
Diaphaneity:
Luster: Resinous
Habit: pseudomorphs of köttigite-parasymplesite, gel-like aggregates, amorphous
Hardness: 2-3
Specific gravity: 2.8
Cleavage: None
Tenacity:
Streak: Light brown
Synonyms/varieties:
Comments:
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