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Englishite & Tiptopite

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PJM141112

Englishite & Tiptopite

Description Tabs

Description
Locality: 
Tip Top Mine, Fourmile, Custer County, South Dakota, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.2 × 3.1 cm
Description

A shallow cavity in pinkish feldaspar is covered with small white rosettes of englishite and a small second cavity is filled with white acicular tiptopite

Mineral Data
What's on the rock

Englishite

Formula: 
K3Na2Ca10Al15(PO4)21(OH)7·26H2O
Strunz: 
8.DH.55
Crystal System: 
Monoclinic
Hardness: 
3.0
Type Locality: 
Clay Canyon, Fairfield, Oquirrh Mts, Utah Co., Utah, USA

Tiptopite

Formula: 
K2(Na,Ca)2Li3Be6(PO4)6(OH)2·H2O
Strunz: 
8.DA.25
Hardness: 
3.5
Type Locality: 
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA
Earthstones Australia

Seller Information

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Seller's terms and conditions

All goods must be paid for prior to shipping, all bids are binding.