Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Hellandite-(Y)

Views:
Watches:
JYJ107988

Hellandite-(Y)

Description Tabs

Description
Locality: 
Tre Croci, Vetralla, Vico Lake, Viterbo Province, Lazio, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.5 cm
Description

Orange brown crystals of the yttrium containing hellandite in good 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