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Seamanite & Sussexite

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SKY536693

Seamanite & Sussexite

Type Locality

Description Tabs

Description
Locality: 
Chicagon Mine, Iron County, Michigan, United States of America
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.2 × 0.2 × 0.1 cm
Description

Very small but perfect prismatic crystals of the very rare mineral seamanite associated to sussexite. Very difficult to get this mineral in matrix.

Only 3 localities known workdwide.

Formerly in the collection of Dr.Fred Pough.

Mineral Data
What's on the rock

Seamanite

Formula: 
Mn2+3[B(OH)4](PO4)(OH)2
Strunz: 
6.AC.65
Crystal System: 
Orthorhombic Small acicular crystals.
Hardness: 
4.0
Streak: 
White
Type Locality: 
Chicagon mine, Menominee iron range, Iron Co., Michigan, USA

Sussexite

Formula: 
Mn2+BO2(OH)
Strunz: 
6.BA.15
Hardness: 
3.0
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

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