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Pumpellyite With Calcite & Native Copper

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QRI912825

Pumpellyite With Calcite & Native Copper

Ex coll. Lehmann (CH)
Classic Locality

Description Tabs

Description
Locality: 
Calumet Township, Houghton County, Michigan, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 3.1 × 2.5 cm
Largest Crystal: 
0.50cm
Weight: 
29.00gr
Description

Rich miniature aggregate of green pumpellyite and bright epidote associated to pinkish calcite (posibly copper included) and prehnite.

Quite esthetic and peculiar, it comes with its original handwritten label in German, pasted on the plastic box. Former Swiss collection Lehmann, dated back to the late 80s.

Boxed with Label
Mineral Data
What's on the rock

Pumpellyite

Synonym Of: 

Pumpellyite-(Al)

Formula: 
Ca2(Al,Fe2+,Mg)Al2(Si2O7)(SiO4)(OH,O)2·H2O
Strunz: 
9.BG.20
Hardness: 
0.0

Pumpellyite-(Fe2+)

Formula: 
Ca2Fe2+Al2(Si2O7)(SiO4)(OH)2·H2O
Strunz: 
9.BG.20
Hardness: 
0.0

Pumpellyite-(Fe3+)

Formula: 
Ca2(Fe3+,Mg,Fe2+)(Al,Fe3+)2(Si2O7)(SiO4)(OH,O)2·H2O
Strunz: 
9.BG.20
Hardness: 
0.0

Pumpellyite-(Mg)

Formula: 
Ca2MgAl2(Si2O7)(SiO4)(OH)2·H2O
Strunz: 
9.BG.20
Hardness: 
5.5

Pumpellyite-(Mn2+)

Formula: 
Ca2(Mn2+,Mg)(Al,Mn3+,Fe3+)2(Si2O7)(SiO4)(OH)2·H2O
Strunz: 
9.BG.20
Hardness: 
0.0
Group Parent: 
Pumpellyite Group

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Copper

Formula: 
Cu
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

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