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
0 item @ $0.00  
Home | My Cart | Login | Register

Laubmannite

#BN49587
SOLD
Laubmannite from Buckeye Mountain, Polk Co., Arkansas, United States - BN49587
Laubmannite from Buckeye Mountain, Polk Co., Arkansas, United States - BN49587

Laubmannite

#BN49587
Availability
Sold
Size
4.5 x 3.5 x 2 cm - Miniature 
Formula
(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+ (RRUFF)
Locality
Buckeye Mountain, Polk Co., Arkansas, United States
Tagged
phosphate

Laubmannite is a combination of several rare phosphate minerals: Kidwellite, Dufrenite, and Beraunite. Each is a different phosphate phase of similar compositions producing concentric color zones. This is a real nice specimen.

Laubmannite

Formula
Fe++3Fe+++6(PO4)4(OH)12 
Crystal System
Orthorhombic 
Luster
Vitreous - Silky 
Color
brown, greenish brown, grayish green, yellow green, dark green 
Streak
greenish 
Class
Orthorhombic 
Fracture
Brittle 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
Mineralpedia
View Laubmannite
On Dakota Matrix
Previously Sold Laubmannite
On Dakota Matrix
Other Available Laubmannite
WebMineral
View Laubmannite
Mindat
View Laubmannite

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