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Hydromagnesite & Artinite

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SYM598032

Hydromagnesite & Artinite

Description Tabs

Description
Locality: 
Staten Island, Richmond County, New York, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.5 × 0.5 cm
Description

Labeled as hyromagnesite and artinite from Staten Island, N.Y. 

Mineral Data
What's on the rock

Hydromagnesite

Formula: 
Mg5(CO3)4(OH)2·4H2O
Strunz: 
5.DA.05
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
Castle Point, Hoboken, Hudson Co., New Jersey, USA

Artinite

Formula: 
Mg2(CO3)(OH)2·3H2O
Strunz: 
5.DA.10
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Dossi di Franscia (Franscia Mine; Franscia Mines; Franscia Quarries), Campo Franscia (Franscia), Lanzada, Lanterna Valley, Malenco Valley, Valtellina, Sondrio Province, Lombardy, Italy