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Illite Psm Niobophyllite Parisite Zircon Aegirine Quartz & Orthoclase

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KMF652035

Illite Psm Niobophyllite Parisite Zircon Aegirine Quartz & Orthoclase

ex Uli Bahmann
Classic Locality

Description Tabs

Description
Locality: 
Mount Malosa, Zomba, Southern Region, Malawi
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.4 × 4.9 × 3 cm
Description

Ex A&U Bahmann collection. Seven minerals play their part in this extensive specimen, most notable is the white illite crystal blades that were niobophyllite originally.

The single parasite crystal poking out in between the illite blades is exceptional too.

The rest is easy to make out, quartz, zircon, aegerine and orthoclase.

Mineral Data
What's on the rock

Illite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Formula: 
K0.65Al2.0[Al0.65Si3.35O10](OH)2
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Maquoketa Shale, Gilead, Calhoun Co., Illinois, USA

Niobophyllite

Formula: 
(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31
Strunz: 
9.DC.05
Hardness: 
3.0 - 4.0
Type Locality: 
Mann 2 (Ten Mile Lake), Seal Lake alkaline complex (Letitia Lake), Labrador, Newfoundland and Labrador, Canada

Parisite

Synonym Of: 

Parisite-(Ce)

Formula: 
Ca(Ce,La)2(CO3)3F2
Strunz: 
5.BD.20b
Hardness: 
4.5

Zircon

Formula: 
ZrSiO4
Strunz: 
9.AD.30
Crystal System: 
Tetragonal
Hardness: 
7.5
Streak: 
White

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0
Streak: 
White

Seller Information

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