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

Friday, 01 May 2020 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including beryllonite, galena, pyromorphite, saleeite, spangolite, and tetrahedrite and more from places like Paprok, Kamdesh dist., Nuristan, Afghanistan, Heights mine, Westgate, Weardale, Co., Durham, England, MMM Mine, Broken Hill, Yancowinna Co., New South Wales, Australia, Ranger #1 mine, Northern Territory, Australia, Mex-Tex mine, Bingham, Socorro Co., New Mexico, United States, and Wheal Anna, Mawnan, Cornwall, England.

Beryllonite

with Elbaite - #BC52609
Locality
Paprok, Kamdesh dist., Nuristan, Afghanistan 
Formula
NaBePO4 
Availability
Available
Price
$350.00
Size
5 x 3 x 2.2 cm - Miniature 
Tagged
phosphate , beryllium , pegmatite mineral  

A large yellowish white, etched out Beryllonite crystals with a few pink tourmalines attached.


Beryllonite

Formula
NaBePO4 
Crystal System
Monoclinic 
Cleavage
Perfect, Good, Perfect 
Luster
Vitreous - Pearly 
Color
colorless, white, light yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5.5-6 
Collection
Barbara Cureton Collection

Galena

with Fluorite - #52467
Locality
Heights mine, Westgate, Weardale, Co., Durham, England 
Formula
PbS 
Availability
Sold
Size
7 x 3 x 3.5 cm - Sm Cabinet 
Tagged
sulfide  

Not too many people are aware of the Galena from the Heights mine, since it is all about the beautiful green Fluorite. But this is a nice example. As you can see they are naturally etched. 


Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
View Galena
Mindat
View Galena

Pyromorphite

on Galena - #52479
Locality
MMM Mine, Broken Hill, Yancowinna Co., New South Wales, Australia 
Formula
Pb5(PO4)3Cl 
Availability
Available
Price
$250.00
Size
10 x 8 x 5.5 cm - Cabinet 
Tagged
phosphate  

This is a most interesting specimen of brown Pyromorphite on and in a Galena vug. The Pyromorphite crystals are excellent and measure up to 8-10mm. How these survived extraction is amazing since the stand straight up!


Pyromorphite

Formula
Pb5(PO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Crystals short to long prismatic, acicular, often hoppered terminations, rarely tabular to equant; radiating to branching groups, tapering to a point. Commonly rounded, globular, reniform, botryoidal. 
Cleavage
On {1011}, interrupted 
Luster
Resinous to subadamantine 
Color
Dark grass-green, green, yellow, yellow-orange, reddish orange, yellow-brown, brown, tan, grayish, may be colorless 
Streak
White 
Geological Setting
A secondary mineral in the oxidized zone of lead deposits 
Class
Hexagonal, 6/m - Dipyramidal 
Fracture
Uneven to subconchoidal 
Hardness
3.5–4 

Saleeite

#BC52646
Locality
Ranger #1 mine, Northern Territory, Australia 
Formula
Mg(UO2)2(PO4)2·10H2
Availability
Available
Price
$2,500.00
Size
10 x 8.5 x 6 cm - Cabinet 
Tagged
phosphate  
Special Info
Antique Specimen 
Special Info
Radioactive!! 

Museum quality specimen of opaque greenish yellow super-sized crystals of Saleeite. The largest crystal is 1.7cm. Many of the other crystals are tabular and stacked like pages in a book fanned out. Formerly in the Colorado School of Mines collection. See prov. tab for older labels. Ex. Barbara Cureton collection.

The color match is most like the first photo. I had to "tweek" the color in the remainder of the photos since, as usual, the digital process washes the true color out.

This specimen is remarkably similiar to the one in the second edition of Encyclopedia of Minerals by Roberts & Campbell.


Saleeite

Formula
Mg(UO2)2(PO4)2·10H2
Crystal System
Tetragonal 
Crystal Habit
Tabular, Aggregates 
Cleavage
Perfect, Indistinct, Indistinct 
Luster
Vitreous (Glassy) 
Color
yellow, yellow green, olive green 
Streak
yellow white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Hardness
2.5 
Collection
Barbara Cureton Collection
Special Info
Antique Specimen
Special Info
Radioactive!!
Mineralpedia
View Saleeite
On Dakota Matrix
Previously Sold Saleeite
On Dakota Matrix
Other Available Saleeite
WebMineral
View Saleeite
Mindat
View Saleeite

Spangolite

with Brochantite - #AH53192
Locality
Mex-Tex mine, Bingham, Socorro Co., New Mexico, United States 
Formula
Cu6AlSO4(OH)12Cl·3H2
Availability
Sold
Size
8 x 5 x 3.5 cm - Sm Cabinet 
Tagged
copper  

A 2.5cm vug filled with both acicular Brochantite and blue Spangolite. It was tough to get a good photo of the Spangolite since the crystals are in the vug. But there is one large 2mm crystal on the outer edge.


Spangolite

Formula
Cu6AlSO4(OH)12Cl·3H2
Crystal System
Trigonal 
Crystal Habit
Prismatic, Platy, Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
blue green, green, dark green, emerald green 
Streak
light green 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Conchoidal 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection

Tetrahedrite

#52461
Locality
Wheal Anna, Mawnan, Cornwall, England 
Formula
Cu12Sb4S13 
Availability
Sold
Size
8 x 4 x 4 cm - Sm Cabinet 
Tagged
sulfide , copper  

Tetrahedrite crystals to 1cm, some damage, but some really nice crystals.


Tetrahedrite

Formula
Cu12Sb4S13 
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Massive 
Cleavage
None, None, None 
Luster
Metallic 
Color
iron gray, black, steel gray 
Streak
black 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 

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