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  

Nenadkevichite

#PD35683

Nenadkevichite

#PD35683
Availability
Sold
Size
4.5 x 4.5 x 3.5 cm - Miniature 
Formula
(Na,□)8Nb4(Si4O12)2(O,OH)4·8H2O (RRUFF)
Locality
Mt. Karnasurt, Lovozero Massif, Kola Peninsula, Russia

Specimen from the Fersman Mineralogical Museum in Moscow - brown, thick plates to 1cm.

Type Locality

Nenadkevichite

Formula
(Na,[ ])8Nb4(Si4O12)2(O,OH)4·8H2
Crystal System
Orthorhombic 
Crystal Habit
Bladed, Pseudo Hexagonal, Prismatic 
Cleavage
Indistinct, None, None 
Luster
Earthy (Dull) 
Color
brown, brown, rose, yellow, tan 
Streak
light pink 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Phillips Collection
Special Info
Type Locality

Other Sold

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2021 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map