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Hellandite-(Y) & Hingganite-(Y)

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SER805536

Hellandite-(Y) & Hingganite-(Y)

Description Tabs

Description
Locality: 
Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.1 × 2.6 cm
Description

two light pink blades of hellandite-Y host dozens of tiny cream hingganite-Y crystals

Mineral Data
What's on the rock

Hellandite-(Y)

Formula: 
(Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2
Strunz: 
9.DK.20
Crystal System: 
Monoclinic
Hardness: 
5.5
Type Locality: 
Lindvikskollen quarry, Lindvikskollen-Kalstadgangen pegmatite, Kragerø, Telemark, Norway