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, 06 March 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 jamesonite, khaidarkanite, molybdenite, pyromorphite, quartz, and redledgeite and more from places like Wheal Boys, Port Isaac, St. Endellion, Cornwall, England, Khaidarkan Sb-Hg dep., Fergana, Valley, Osh Oblast, Kyrgyzstan, Questa Molybdenum mine, Questa, Red River dist., Taos Co., New Mexico, United States, Trevinnick mine, St. Kew, Cornwall, England, Florence mine, Egremont, Cumbria, England, and Saranovskii mine, Urals Region, Russia.

Jamesonite

#52475
Locality
Wheal Boys, Port Isaac, St. Endellion, Cornwall, England 
Formula
Pb4FeSb6S14 
Availability
Sold
Size
10 x 7 x 6 cm - Cabinet 
Tagged
sulfide  

Metallic Jamesonite in Quartz.


Jamesonite

Formula
Pb4FeSb6S14 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Radial, Massive - Fibrous 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
lead gray, steel gray, dark lead gray 
Streak
black. grayish 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2.5 
SOLD
Khaidarkanite - 52377
Khaidarkanite - 52377

Khaidarkanite

#52377
Locality
Khaidarkan Sb-Hg dep., Fergana, Valley, Osh Oblast, Kyrgyzstan 
Formula
Cu4Al3(OH)14F3·2H2
Availability
Sold
Size
3.5 x 2.5 x 2.5 cm - Miniature 
Tagged
copper  
Special Info
Type Locality 

Much like Cyanotrichite, a copper sulfate, but it is not! It is a much rarer copper oxyhalide called Khaidarkanite, which has thus far been found in only four worldwide deposits. Not many of these critters around. Comes with a Russian tag.


Khaidarkanite

Formula
Cu4Al3(OH)14F3·2H2
Crystal System
Monoclinic 
Crystal Habit
Acicular, Radial, Aggregates 
Cleavage
Imperfect, None, None 
Luster
Vitreous (Glassy) 
Color
bright blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2.5 
Special Info
Type Locality
SOLD
Molybdenite - AH52569
Molybdenite - AH52569

Molybdenite

#AH52569
Locality
Questa Molybdenum mine, Questa, Red River dist., Taos Co., New Mexico, United States 
Formula
MoS2 
Availability
Sold
Size
15 x 9 x 6 cm - Cabinet 
Tagged
sulfide  

Large mass of Molybdenite, an ore specimen.


Molybdenite

Formula
MoS2 
Crystal System
Hexagonal 
Crystal Habit
Foliated, Massive, Disseminated 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
black, lead gray, gray 
Streak
greenish gray 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Sectile 
Hardness
Collection
Arnold G Hampson Collection

Pyromorphite

#52489
Locality
Trevinnick mine, St. Kew, Cornwall, England 
Formula
Pb5(PO4)3Cl 
Availability
Sold
Size
8 x 6 x 3.5 cm - Sm Cabinet 
Tagged
phosphate  

The green is washed out in the close-up photos, but this is a good specimen of tiny acicular Pyromorphite crystals to 1.5mm.


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 

Quartz

var. eisenkiesel on Hematite - #52448
Locality
Florence mine, Egremont, Cumbria, England 
Formula
SiO2 
Availability
Available
Price
$65.00
Size
5 x 3 x 4 cm - Miniature 

Red doubly terminated crystals of Quartz to 3mm on Hematite matrix. 


Quartz

Formula
SiO2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Druse, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, violet, gray, yellow 
Streak
white 
Class
Trigonal - Trapezohedral 
Fracture
Conchoidal 
Hardness
Mineralpedia
View Quartz
On Dakota Matrix
Previously Sold Quartz
On Dakota Matrix
Other Available Quartz
WebMineral
View Quartz
Mindat
View Quartz

Redledgeite

#52369
Locality
Saranovskii mine, Urals Region, Russia 
Formula
BaxCr2xTi4+8-2xO16 
Availability
Sold
Size
2.3 x 1.8 x 1 cm - Thumbnail 

There are three tufts around 1-2mm of dark green, acicular crystals on matrix which are the Redledgeite. However, all over the matrix you will see tiny fibers, which is also the Redledgeite. The mineral is very rare, seldom seen, and found in olny three places on Earth. Handle it with care as some are along the edges. 


Redledgeite

Formula
BaxCr2xTi4+8-2xO16 
Crystal System
Tetragonal 
Cleavage
Good, None, None 
Luster
Adamantine 
Color
yellow green, black 
Streak
gray white 
Class
Tetragonal - Dipyramidal 
Hardness
6-7 

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