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, 24 July 2022 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including benitoite, boleite, calcite, crocoite, diopside, and dioptase and more from places like New Idria mine, New Idria dist., San Benito Co., California, United States, Amelia mine, Boleo, Santa Rosalia, Baja California, Mexico, Mariposa mine, Terlingua dist., Brewster Co., Texas, United States, Berezovskoe Au dep., Berezovskii, Sverdlovskaya Oblast', Urals, Russia, Prabornaz mine, Saint-Marcel, Aosta Valley, Italy, and Tsumeb mine, Tsumeb, Namibia.

Benitoite

#WR58866
Locality
New Idria mine, New Idria dist., San Benito Co., California, United States 
Formula
BaTiSi3O9 
Availability
Sold
Size
5 x 4 x 2.5 cm - Miniature 

A 10 and 6mm gemmy blue Benitoite crystals.


Benitoite

Formula
BaTiSi3O9 
Crystal System
Hexagonal 
Crystal Habit
Tabular 
Cleavage
Poor, None, None 
Luster
Vitreous (Glassy) 
Color
blue, purple, pink, white, colorless 
Streak
white 
Class
Hexagonal - Ditrigonal Dipyramidal 
Fracture
Conchoidal 
Hardness
6-6.5 
Collection
Willard L. Roberts Collection
Mineralpedia
View Benitoite
On Dakota Matrix
Previously Sold Benitoite
On Dakota Matrix
Other Available Benitoite
WebMineral
View Benitoite
Mindat
View Benitoite

Boleite

#WR58871
Locality
Amelia mine, Boleo, Santa Rosalia, Baja California, Mexico 
Formula
KAg9Pb26Cu24Cl62(OH)48 
Availability
Sold
Size
0.5 x 0.5 x 0.5 cm - Thumbnail 
Tagged
copper , silver  

A 5mm cubic crystal.


Boleite

Formula
KAg9Pb26Cu24Cl62(OH)48 
Crystal System
Isometric 
Crystal Habit
Pseudo Cubic 
Cleavage
Perfect, Good, None 
Luster
Vitreous - Pearly 
Color
indigo blue, light blue 
Streak
light green 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
3-3.5 
Collection
Willard L. Roberts Collection
Mineralpedia
View Boleite
On Dakota Matrix
Previously Sold Boleite
On Dakota Matrix
Other Available Boleite
WebMineral
View Boleite
Mindat
View Boleite

Calcite

#52538
Locality
Mariposa mine, Terlingua dist., Brewster Co., Texas, United States 
Formula
CaCO3 
Availability
Available
Price
$60.00
Size
5.5 x 4.5 x 2 cm - Sm Cabinet 
Tagged
carbonate  

Orange scalenohedral crystals of sharply terminated Calcite.


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Mineralpedia
View Calcite
On Dakota Matrix
Previously Sold Calcite
On Dakota Matrix
Other Available Calcite
WebMineral
View Calcite
Mindat
View Calcite

Crocoite

#58853
Locality
Berezovskoe Au dep., Berezovskii, Sverdlovskaya Oblast', Urals, Russia 
Formula
PbCrO4 
Availability
Sold
Size
4 x 3.5 x 3.5 cm - Miniature 

Red, prismatitc crystals of Crocoite to 1cm. One crystal is nicely terminated.


Crocoite

Formula
PbCrO4 
Crystal System
Monoclinic 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Acicular 
Cleavage
Distinct, Indistinct, Indistinct 
Luster
Adamantine 
Color
yellow, orange, red, red orange 
Streak
yellowish orange 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2.5-3 
Collection
Don Cooke Collection
Mineralpedia
View Crocoite
On Dakota Matrix
Previously Sold Crocoite
On Dakota Matrix
Other Available Crocoite
WebMineral
View Crocoite
Mindat
View Crocoite

Diopside

var. violane - #BW58851
Locality
Prabornaz mine, Saint-Marcel, Aosta Valley, Italy 
Formula
CaMgSi2O6 
Availability
Sold
Size
8 x 4.5 x 4.5 cm - Sm Cabinet 

This is a rare color variety of Diopside called "violane". Apparently the color is due to a little manganese in the structure. 


Diopside

Formula
CaMgSi2O6 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Blocky, Granular 
Cleavage
Good, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
blue, brown, colorless, green, gray 
Streak
white green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Bill Wilson Collection
Mineralpedia
View Diopside
On Dakota Matrix
Previously Sold Diopside
On Dakota Matrix
Other Available Diopside
WebMineral
View Diopside
Mindat
View Diopside

Dioptase

#WR58870
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
CuSiO3·H2
Availability
Available
Price
$45.00
Size
3 x 2.5 x 2 cm - Thumbnail 
Tagged
copper  

Nice coverage of sparkly green Dioptase crystals to 2m.


Dioptase

Formula
CuSiO3·H2
Crystal System
Trigonal 
Crystal Habit
Massive, Cryptocrystalline, Crystalline - Coarse 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
dark blue green, emerald green, turquoise 
Streak
green 
Class
Trigonal - Rhombohedral 
Fracture
Conchoidal 
Hardness
Collection
Willard L. Roberts Collection
Mineralpedia
View Dioptase
On Dakota Matrix
Previously Sold Dioptase
On Dakota Matrix
Other Available Dioptase
WebMineral
View Dioptase
Mindat
View Dioptase

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