Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Hellandite-(Y) & Quartz

Views:
Watches:
SER743628

Hellandite-(Y) & Quartz

Description Tabs

Description
Locality: 
Seula Mine, Mount Camoscio, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 1 × 0.4 cm
Description

a group of cream hellandite-Y crystals on  and with colourless quartz

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White