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Kaolinite & Tourmaline Var Schorl

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SYA922196

Kaolinite & Tourmaline Var Schorl

Ex coll. Ulrich Vetter, Hannover und Alexander Franz, Hannover
Classic Locality

Description Tabs

Description
Locality: 
Königskopf Quarry, Harz, Goslar, Lower Saxony, Germany
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.5 × 2.5 cm
Description

White kaolinite with black schorl crystals from an old, seldom offered locality.

 

Ex collections of Dipl. Min. Ulrich Vetter, Hannover and Alexander Franz, Hannover.

Comes with the two original handwritten labels.

Mineral Data
What's on the rock

Kaolinite

Formula: 
Al2(Si2O5)(OH)4
Strunz: 
9.ED.05
Hardness: 
2.0 - 2.5
Type Locality: 
Gaoling Mine (Kauling Mine), Gaoling village, Ehu town, Fuliang Co., Jingdezhen Prefecture, Jiangxi Province, China

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

Schorl

Formula: 
Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.0

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