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  

Sincosite with Minyulite

#DH34870

Sincosite with Minyulite

#DH34870
Availability
Sold
Size
2.5 x 2.5 x 1 cm - Thumbnail 
Formula
Ca(V4+O)2(PO4)2·5H2O (RRUFF)
Locality
Ross Hannibal mine, Lawrence Co., South Dakota, United States
Tagged
phosphate

Found in 1996 during open pit mining, the Sincosite from this deposit was originally thought to be Torbernite. Not so, but the two look a lot alike. These crystals are to about 0.5mm with a spray of Minyulite to 7mm across.

Sincosite

Formula
Ca(V4+O)2(PO4)2·5H2
Crystal System
Tetragonal 
Crystal Habit
Scaly, Platy, Aggregates 
Cleavage
Perfect, Distinct, Poor 
Luster
Vitreous - Metallic 
Color
green, yellowish green, olive green, brownish green 
Streak
light green 
Class
Tetragonal 
Fracture
Brittle 
Hardness
1-2 

Data courtesy of Webmineral.

Collection
Hess Collection
Mineralpedia
View Sincosite
On Dakota Matrix
Previously Sold Sincosite
On Dakota Matrix
Other Available Sincosite
WebMineral
View Sincosite
Mindat
View Sincosite

Related Products

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