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Goedkenite & Palermoite

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Goedkenite & Palermoite

Type Locality

Description Tabs

Description
Locality: 
Palermo #2 Mine, Groton, Grafton County, New Hampshire, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.1 × 1.1 cm
Description

some clusters of colourless goedkenite on prisms of palermoite crystals 

Mineral Data
What's on the rock

Goedkenite

Formula: 
Sr2Al(PO4)2(OH)
Strunz: 
8.BG.05
Hardness: 
5.0
Type Locality: 
Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA

Palermoite

Formula: 
(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4
Strunz: 
8.BH.25
Crystal System: 
Orthorhombic Vertically striated prisms.
Hardness: 
5.5
Streak: 
White
Type Locality: 
Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA