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Lourenswalsite Delindeite Labuntsovite-Mn

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NEK1167049

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Description
Locality: 
Diamond Jo Quarry, Magnet Cove, Hot Spring County, Arkansas, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.3 × 1 cm
Description

A nice specimen with multiple beautiful rosettes of extremely rare Lourenswalsite with some very nice pinkish-brown crystals of the also very rare mineral, Delindeite, in a vug, and bright orange crystals of Labuntsovite-Mn sparsely scattered on the matrix. Very good specimen with multiple rare species.

Mineral Data
What's on the rock

Lourenswalsite

Formula: 
(K,Ba)2(Ti,Mg,Ca,Fe)4(Si,Al,Fe)6O14(OH)12
Strunz: 
9.EJ.05
Hardness: 
0.0
Type Locality: 
Diamond Jo Quarry, Magnet Cove, Hot Spring Co., Arkansas, USA

Delindeite

Formula: 
(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2·2H2O
Strunz: 
9.BE.60
Crystal System: 
Monoclinic
Hardness: 
0.0
Streak: 
White
Type Locality: 
Diamond Jo Quarry, Magnet Cove, Hot Spring Co., Arkansas, USA

Labuntsovite-Mn

Formula: 
Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8·10-12H2O
Strunz: 
9.CE.30e
Hardness: 
6.0
Type Locality: 
Pegmatite No. 19, Kuftn'yun Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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