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Anthophyllite With Enstatite Var Bronzite

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LGM635565

Anthophyllite With Enstatite Var Bronzite

Ex Dr. Krantz, Bonn, Germany
With Antique Label

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Description Tabs

Description
Locality: 
Pelham Mine, Pelham, Hampshire County, Massachusetts, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.5 × 7.5 × 2.5 cm
Weight: 
100.00gr
Description

A sawn and polished piece of dark greenish anthophyllite asbestos together with golden enstatite var bronzite.

Pelham was an anthophyllite asbestos mine which was operated 1873-1874, and possibly later. The first report of asbestos from Pelham appears to have been by Edward Hitchcock in 1818, who listed an occurrence of compact asbestos in the town.

A nice historic sample from old Dr. Krantz stock, comes with interesting label which is glued-together from text snippets; this type of label was occasionally found - but was quite rare overall.

Mineral Data
What's on the rock

Anthophyllite

Formula: 
☐{Mg2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.05
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
5.5 - 6.0
Type Locality: 
Kjennerudvann Anthophyllite Prospect, Kjennerudvann, Kongsberg, Buskerud, Norway

Enstatite

Formula: 
MgSiO3
Group Parent: 
Orthopyroxene Subgroup
Strunz: 
9.DA.05
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
5.0 - 6.0

Bronzite

Variety Of: 

Enstatite

Formula: 
MgSiO3
Strunz: 
9.DA.05
Hardness: 
5.0 - 6.0
Formula: 
(Mg,Fe2+)2[SiO3]2
Hardness: 
0.0

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