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Muscovite Psm Indialite & Cordierite

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LGM577264

Muscovite Psm Indialite & Cordierite

Ex Dr. Krantz, Bonn, Germany
Classic Locality

Description Tabs

Description
Locality: 
Kameoka City, Kyoto Prefecture, Honshu Island, Japan
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 8.5 × 5 cm
Weight: 
360.00gr
Description

"Cerasite (of Kikuchi)" is an indialite and cordierite intergrowth of trapiche habit, named for its resemblance to flower petals. Generally altered largely or entirely to muscovite or "sericite" (cit. mindat).
This specimen hosts a dozen or so of these unusual pseudomorphs, up to 0.8 cm size.

From old Dr. Krantz stock, unfortunately no old label.

Mineral Data
What's on the rock

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Indialite

Formula: 
Mg2Al3(AlSi5O18)
Strunz: 
9.CJ.05
Hardness: 
7.0 - 7.5
Type Locality: 
Bokaro coalfield, Hazaribagh District, Jharkhand, India

Cordierite

Formula: 
(Mg,Fe)2Al3(AlSi5O18)
Strunz: 
9.CJ.10
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 7.5
Type Locality: 
Großer Arber, Bayerisch Eisenstein, Lower Bavaria, Bavaria, Germany

Seller Information

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