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  

Mixed Minerals

Sunday, 11 July 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including baryte, chalcopyrite, clinocervantite, cosalite, hercynite, and microcline and more from places like near Norman, Cleveland Co., Oklahoma, United States, Cuartociengas, Coahuilla, Mexico, Tafone mine, Grosetto Province, Tuscany, Italy, Bolivar mine, Piedras Verdes, Chihuahua, Mexico, La Piana Alp, Premosello Chiovenda, Ossola Valley, Piedmont, Italy, and Organ dist., Dona Ana Co., New Mexico, United States.

Baryte

rose - #48540
Locality
near Norman, Cleveland Co., Oklahoma, United States 
Formula
BaSO4 
Availability
Available
Price
$215.00
Size
14 x 8 x 7 cm - Cabinet 

Nice set of brick red rose Baryte crystals. The laregest "rose" is 7cm across. The place is closed to collecting.

This occurence is one of the more unique localities for the oddities of mineral world. Here barium mineralization penetrated the Permian Garber Sandstone along fractures sets and formed rose-like clusters of Baryte (Barite) crystals. Individual crystals form saucer shaped crystals with sand inclucions from the the Graber Sandstone. Trace Hematite imparts the red coloration. This specimen is from Dr. David London's collection, who wrote a thorough article on this occurence in the July/August 2008 issue of the Mineralogical Record.  


Baryte

Formula
BaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Massive - Fibrous 
Cleavage
Perfect, Perfect, Imperfect 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, grayish white, brownish white, dark brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Mineralpedia
View Baryte
On Dakota Matrix
Previously Sold Baryte
On Dakota Matrix
Other Available Baryte
WebMineral
View Baryte
Mindat
View Baryte

Chalcopyrite

on Quartz - #52658
Locality
Cuartociengas, Coahuilla, Mexico 
Formula
Cu1+Fe3+S2 
Availability
Available
Price
$125.00
Size
7 x 3 x 3 cm - Sm Cabinet 
Tagged
sulfide , copper  

Nice piece of Quartz totally coated with Chalcopyrite.


Chalcopyrite

Formula
Cu1+Fe3+S2 
Crystal System
Tetragonal 
Crystal Habit
Euhedral Crystals, Striated, Druse 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
brass yellow, honey yellow 
Streak
greenish black 
Class
Tetragonal - Scalenohedral 
Fracture
Brittle 
Hardness
3.5 
Collection
Barbara Cureton Collection

Clinocervantite

with Valentinite - #55933
Locality
Tafone mine, Grosetto Province, Tuscany, Italy 
Formula
Sb3+Sb5+O4 
Availability
Available
Price
$115.00
Size
3 x 3 x 2.5 cm - Thumbnail 

Tiny, less than 0.2mm, thin bladed colorless Clinocervantite crystals lining vugs with several acicular crystals of Valentinite to 3mm. Clinocervantite is a very rare antimony oxide found in only three localties worldwide.


Clinocervantite

Formula
Sb3+Sb5+O4 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Microscopic Crystals 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness

Cosalite

with Chalcopyrite - #55937
Locality
Bolivar mine, Piedras Verdes, Chihuahua, Mexico 
Formula
Pb2Bi2S5 
Availability
Available
Price
$250.00
Size
7 x 5 x 4 cm - Sm Cabinet 
Tagged
sulfide  

Silvery, acicular crystals to 7mm in Quartz matrix with Chalcopyrite. Excellent specimen.


Cosalite

Formula
Pb2Bi2S5 
Crystal System
Orthorhombic 
Crystal Habit
Radial, Massive - Fibrous 
Cleavage
Good, None, None 
Luster
Metallic 
Color
gray, steel gray, silver white 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
2.5-3 
Mineralpedia
View Cosalite
On Dakota Matrix
Previously Sold Cosalite
On Dakota Matrix
Other Available Cosalite
WebMineral
View Cosalite
Mindat
View Cosalite

Hercynite

#52611
Locality
La Piana Alp, Premosello Chiovenda, Ossola Valley, Piedmont, Italy 
Formula
Fe2+Al2O4 
Availability
Available
Price
$150.00
Size
3.5 x 3 x 3.5 cm - Miniature 

Malformed dull black, large octahedral Hercynite crystal. This is probably one of the better Hercynite crystals I have seen.


Hercynite

Formula
Fe2+Al2O4 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Granular 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous (Glassy) 
Color
black 
Streak
dark green 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
7.5 
Collection
Barbara Cureton Collection

Microcline

#52590
Locality
Organ dist., Dona Ana Co., New Mexico, United States 
Formula
KAlSi3O8 
Availability
Available
Price
$300.00
Size
8 x 5 x 6 cm - Sm Cabinet 
Tagged
pegmatite mineral  

I'm not sure what to make of this piece, simply it is set of light pink Microcline twinned crystals.


Microcline

Formula
KAlSi3O8 
Crystal System
Triclinic 
Crystal Habit
Blocky, Crystalline - Coarse, Prismatic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
bluish green, green, gray, grayish yellow, yellowish 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness
Collection
Barbara Cureton Collection

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