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 Rare and FIne Minerals

Sunday, 25 April 2021 07:00 PM

Introducing the "Mixed Rare and FIne Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including calcite, eglestonite, hureaulite, soddyite, and uraninite and more from places like Bou Azzer dist., Anti-Atlas, Morocco, Cahill mine, Humboldt Co., Nevada, United States, Tip Top mine, Custer Co., South Dakota, United States, Swambo Hill, Katanga, Democratic Republic of Congo, and Cardiff Uranium mine, Haliburton Co., Ontario, Canada.

Calcite

(cobaltoan) - #55661
Locality
Bou Azzer dist., Anti-Atlas, Morocco 
Formula
CaCO3 
Availability
Available
Price
$45.00
Size
7 x 6 x 4.5 cm - Sm Cabinet 
Tagged
carbonate  

Pink translucent prismatic crystals of Calcite with "nail-head" terminations. The reddish brown clusters look to be limonite replacing Baryte.


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
SOLD
Eglestonite - 47911
Eglestonite - 47911

Eglestonite

with Cinnabar - #47911
Locality
Cahill mine, Humboldt Co., Nevada, United States 
Formula
Hg1+6OCl3(OH) 
Availability
Sold
Size
8 x 5 x 4.5 cm - Sm Cabinet 

Green to yellow waxy crusts in an area of about 19 x 6mm. It is associated with massive Cinnabar.


Eglestonite

Formula
Hg1+6OCl3(OH) 
Crystal System
Isometric 
Cleavage
None, None, None 
Luster
Adamantine - Resinous 
Color
brown, brownish yellow, yellow, dark brown, orange 
Streak
light yellow 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
2-3 

Hureaulite

#55657
Locality
Tip Top mine, Custer Co., South Dakota, United States 
Formula
Mn2+5(PO4)2(PO3OH)2·4H2
Availability
Available
Price
$40.00
Size
4.5 x 4.5 x 4 cm - Miniature 
Tagged
phosphate , pegmatite mineral  

Rich pink glassy crystals to 5mm. Under the scope you will also see many fine micro Hureaulite crystals and minor Jahnsite. The matrix is altered Triphylite with green Leucophosphite. 


Hureaulite

Formula
Mn2+5(PO4)2(PO3OH)2·4H2
Crystal System
Monoclinic 
Crystal Habit
Massive, Compact, Fibrous 
Cleavage
Distinct, None, None 
Luster
Vitreous - Greasy 
Color
red, white, grayish white, yellowish white, reddish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness

Soddyite

#PD55686
Locality
Swambo Hill, Katanga, Democratic Republic of Congo 
Formula
(UO2)2SiO4·2H2
Availability
Sold
Size
7 x 3 x 3.5 cm - Sm Cabinet 
Special Info
Radioactive!! 

Very good, textbook crystals of opaque pastel yellow, and translucent, glassy Soddyite crystals to 1mm. Ex. Willim Pinch in Cooke collection.


Soddyite

Formula
(UO2)2SiO4·2H2
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Striated, Pyramidal 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
yellow, canary yellow, yellowish green, yellow 
Streak
yellow 
Class
Orthorhombic - Dipyramidal 
Hardness
3-4 
Special Info
Radioactive!!
Mineralpedia
View Soddyite
On Dakota Matrix
Previously Sold Soddyite
On Dakota Matrix
Other Available Soddyite
WebMineral
View Soddyite
Mindat
View Soddyite

Uraninite

with Fluorite & apatite - #PD55684
Locality
Cardiff Uranium mine, Haliburton Co., Ontario, Canada 
Formula
UO2 
Availability
Sold
Size
7 x 5 x 4 cm - Sm Cabinet 
Special Info
Radioactive!! 

An 8mm dull black crude Uraninite crystal showing some cubic and octahedral faces. The crystal in a rock of Calcite and Fluorite and a yellow apatite.


Uraninite

Formula
UO2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Botryoidal, Dendritic 
Cleavage
Good, None, None 
Luster
Sub Metallic 
Color
brownish black, gray, grayish black, black 
Streak
brownish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
5-6 
Collection
Don Phillips Collection
Special Info
Radioactive!!

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