mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
Checkout
1 item @ $25.00   30:00
Home | My Cart | Login | Register

Tourmaline

#27583
SOLD
Tourmaline from Hingston Down quarry, Gunnislake, Cornwall, England - 27583
Tourmaline from Hingston Down quarry, Gunnislake, Cornwall, England - 27583

Tourmaline

#27583
Availability
Sold
Size
2.8 x 2.5 x 2.5 cm - Thumbnail 
Formula
A(D3)G6(T6O18)(BO3)3X3Z (RRUFF)
Locality
Hingston Down quarry, Gunnislake, Cornwall, England

Black, lustrous, divergent sprays of Schorl tourmaline to 18mm.

Tourmaline

Formula
Ca,Na,K[(Al,Fe2+,Fe3+,Li,Mg2+,Mn2+)3](Al,Cr3+,Fe3+,V3+)6(Si6O18)(BO3)3(O,OH)3(F,O,OH) 
Crystal System
Trigonal 
Fracture
Irregular/Uneven-Conchoidal 
Hardness
7 

Data courtesy of Webmineral.

Mineralpedia
View Tourmaline
On Dakota Matrix
Previously Sold Tourmaline
On Dakota Matrix
Other Available Tourmaline
WebMineral
View Tourmaline
Mindat
View Tourmaline

Other Sold

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2025 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map