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
0 item @ $0.00  

Thalenite-(Y)

#PD34246

Thalenite-(Y)

#PD34246
Availability
Sold
Size
3 x 7 x 3.5 cm - Sm Cabinet 
Formula
Y3Si3O10(OH) (RRUFF)
Locality
Naegi mine, Kawamata, Fukushima pref., Honshu Island, Japan
Tagged
REE mineral

Red-pink Thalenite-Y matrix associated with several other rare REE minerals from the Kawamata area in Japan, possibly including Yttrialite-Y (bottle green pictured), Yttrotantalite-Y (thin black crystal), and Yttrogummite (black metaminct).

Thalenite-(Y)

Formula
Y3Si3O10(OH) 
Crystal System
Monoclinic 
Crystal Habit
Tabular, Prismatic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
pink, brownish green, brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
6-6.5 

Data courtesy of Webmineral.

Collection
Phillips Collection

label from Colorado Geological Industries Inc.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2020 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map