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Laphamite & Hieratite

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SKY910470

Laphamite & Hieratite

Type Locality

Description Tabs

Description
Locality: 
Shamokin, Northumberland County, Pennsylvania, United States of America
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.5 × 0.4 × 0.4 cm
Description

Outstanding yellow crystals of laphamite (the Se analogue of orpiment) from the type and only known locality worldwide in Pennsylvania,  associated to white crystal aggregates of the also very rare K silicofluoride mineral hieratite (see analysis enclosed), a mineral new for the locality !

Ex Vandenbroucke Museum collection from Waregem, Belgium.

No duplicates available

Mineral Data
What's on the rock

Laphamite

Formula: 
As2(Se,S)3
Strunz: 
2.FA.30
Hardness: 
1.0 - 2.0
Colour: 
dark red
Type Locality: 
Burnside, Northumberland Co., Pennsylvania, USA

Hieratite

Formula: 
K2[SiF6]
Strunz: 
3.CH.15
Hardness: 
2.5
Type Locality: 
La Fossa crater, Vulcano Island, Lipari, Eolie Islands (Aeolian Islands), Messina Province, Sicily, Italy

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