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Synadelphite

#41248

Synadelphite

#41248
Availability
Available
Price
$195.00
Size
0.9 x 0.7 x 0.4 cm - Thumbnail 
Formula
Mn2+9(As3+O3)(As5+O4)2(OH)9·2H2O (RRUFF)
Locality
Harstigen mine, Filipstad, Värmland, Sweden

Brownish yellow crystalline mineral. Ex. Georg Gebhard with tag. The specimen is part of the type from the British Museum in London. This information is stated on the backside of the label (see prov tab).

Type Material

Synadelphite

Formula
Mn2+9(As3+O3)(As5+O4)2(OH)9·2H2
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Reniform 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Adamantine 
Color
colorless, red, reddish brown, dark brown, black 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
4.5 

Data courtesy of Webmineral.

Collection
Ex. Georg Gebhard
Special Info
Type Material

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