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  

Rare & Mixed Minerals

Thursday, 16 June 2022 06:00 PM

Introducing the "Rare & Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including copper, danalite, darapskite, deweylite, emplectite, and grantsite and more from places like Mass mine, Mass City, Ontonagon Co., Michigan, United States, Lupikko mine, Pitkäranta, Karelia Republic, Russia, Tarapaca Prov., Chile, Cedar Hill quarry, Lancaster Co., Pennsylvania, United States, Tannenbaum mine, Breitenbrunn dist., Erzgebirge, Saxony, Germany, and F-33 mine, Grants dist., Valencia Co., New Mexico, United States.

Copper

#RS58590
Locality
Mass mine, Mass City, Ontonagon Co., Michigan, United States 
Formula
Cu 
Availability
Sold
Size
6.5 x 3 x 1.5 cm - Sm Cabinet 
Tagged
copper , native element  

A hackly mass of Copper.


Copper

Formula
Cu 
Crystal System
Isometric 
Crystal Habit
Nodular, Arborescent 
Cleavage
None, None, None 
Luster
Metallic 
Color
brown, copper red, light pink, red 
Streak
rose 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
RC Stamberg Collection
Mineralpedia
View Copper
On Dakota Matrix
Previously Sold Copper
On Dakota Matrix
Other Available Copper
WebMineral
View Copper
Mindat
View Copper
SOLD
Danalite - 57747
Danalite - 57747

Danalite

#57747
Locality
Lupikko mine, Pitkäranta, Karelia Republic, Russia 
Formula
Be3Fe2+4(SiO4)3
Availability
Sold
Size
3 x 3 x 2.2 cm - Thumbnail 
Tagged
beryllium  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

Red crystal grains of Danalite to about 1mm.


Danalite

Formula
Be3Fe2+4(SiO4)3
Crystal System
Isometric 
Crystal Habit
Massive 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Greasy 
Color
brown, brownish black, grayish yellow, pink, reddish brown 
Streak
gray white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
5.5-6 
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Mineralpedia
View Danalite
On Dakota Matrix
Previously Sold Danalite
On Dakota Matrix
Other Available Danalite
WebMineral
View Danalite
Mindat
View Danalite
SOLD
Darapskite - RS58607
Darapskite - RS58607

Darapskite

#RS58607
Locality
Tarapaca Prov., Chile 
Formula
Na3(SO4)(NO3)·H2
Availability
Sold
Size
3 x 1.5 x 1.5 cm - Thumbnail 

White to yellow, sugary, Darapskite, a sodium sulfate-nitrate formed in masses of nitrate rock.


Darapskite

Formula
Na3(SO4)(NO3)·H2
Crystal System
Monoclinic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
2.5 
Collection
RC Stamberg Collection

Deweylite

#RS58602
Locality
Cedar Hill quarry, Lancaster Co., Pennsylvania, United States 
Availability
Sold
Size
9 x 5 x 3 cm - Sm Cabinet 

Deweylite is a mixture of minerals including Stevensite and Lizardite but and contains a little nickel. This specimen is light green and waxy.


Collection
RC Stamberg Collection

Emplectite

#RS58627
Locality
Tannenbaum mine, Breitenbrunn dist., Erzgebirge, Saxony, Germany 
Formula
Cu1+BiS2 
Availability
Sold
Size
5.5 x 6 x 3 cm - Sm Cabinet 
Tagged
sulfide , copper  

Steely grey prismatic crystals from 1 to 6mm embedded in matrix. Very good and rich specimen.


Emplectite

Formula
Cu1+BiS2 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Granular, Massive - Fibrous 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
gray, grayish yellow, silver white, tin white 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
Collection
RC Stamberg Collection

Grantsite

with Tyuyamunite - #RS58613
Locality
F-33 mine, Grants dist., Valencia Co., New Mexico, United States 
Formula
(Na,Ca)2+x(V5+,V4+)6O16·4H2
Availability
Sold
Size
4 x 2 x 2 cm - Miniature 
Special Info
Type Locality 

Black mass with yellow Tyuyamunite.


Grantsite

Formula
(Na,Ca)2+x(V5+,V4+)6O16·4H2
Crystal System
Monoclinic 
Crystal Habit
Crystalline - Fine, Fibrous, Bladed 
Luster
Silky 
Color
green black, dark green, olive green 
Streak
brownish green 
Class
Monoclinic - Prismatic 
Fracture
Elastic 
Hardness
1-2 
Collection
RC Stamberg Collection
Special Info
Type Locality

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2022 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map