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Rare Minerals Specimens

Tuesday, 24 January 2023 04:00 PM

Introducing the "Rare Minerals Specimens" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including anglesite, barnesite, bastnasite-(la), cerussite, dadsonite, and darapskite and more from places like Touissit dist., Oujda-Angad prov., Oriental, Morocco, Cactus Rat mine, Grand Co., Utah, United States, Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia, Les Dalles mine, Mibladen, Drâa-Tafilalet, Morocco, Graf Jost-Christian mine, Wolfsberg, Saxony, Harz Mtns., Germany, and Chuquicamata mine, El Loa Prov., Antofagasta, Chile.

Anglesite

on Galena - #59645
Locality
Touissit dist., Oujda-Angad prov., Oriental, Morocco 
Formula
PbSO4 
Availability
Sold
Size
3 x 2 x 1.5 cm - Thumbnail 

A single 2.1cm faint yellow to colorless Anglesite crystal on Galena. There is a minor ding at the termination.


Anglesite

Formula
PbSO4 
Crystal System
Orthorhombic 
Crystal Habit
Granular, Stalactitic 
Cleavage
Good, Distinct, None 
Luster
Adamantine 
Color
blue, colorless, green, gray, yellow 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5-3 
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Barnesite

#AH59234
Locality
Cactus Rat mine, Grand Co., Utah, United States 
Formula
Na2V5+6O16·3H2
Availability
Sold
Size
6.5 x 4.5 x 2 cm - Sm Cabinet 
Tagged
vanadium  

Beautiful groups of red acicular crystals.


Barnesite

Formula
Na2V5+6O16·3H2
Crystal System
Monoclinic 
Luster
Adamantine 
Color
brown red, dark red 
Streak
brownish red 
Class
Monoclinic - Prismatic 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Barnesite
On Dakota Matrix
Previously Sold Barnesite
On Dakota Matrix
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Bastnasite-(La)

#59800
Locality
Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia 
Formula
LaCO3
Availability
Available
Price
$50.00
Size
4 x 2.5 x 2.5 cm - Miniature 
Tagged
carbonate , REE mineral  

Thin light blue crusts on shaley matrix with Malachite. Basnasite-La is a rare mineral that occurs in carbonatites at its type locality in the Belaya Zima REE-Nb deposit in Russia. The blue in this bastnasite is due to an impurity of copper.


Bastnasite-(La)

Formula
LaCO3
Crystal System
Hexagonal 
Crystal Habit
Prismatic, Massive - Granular 
Cleavage
Imperfect, Indistinct, None 
Luster
Vitreous - Greasy 
Color
yellow, reddish brown 
Streak
white 
Class
Hexagonal - Ditrigonal Dipyramidal 
Fracture
Uneven 
Hardness
4-5 

Cerussite

with Baryte - #60742
Locality
Les Dalles mine, Mibladen, Drâa-Tafilalet, Morocco 
Formula
PbCO3 
Availability
Sold
Size
13 x 8 x 4.5 cm - Cabinet 
Tagged
carbonate  

Large cabinet specimen full of glassy yellowish and very lustrous Cerussite crystals to 1cm. It is associated with pink bladed Baryte. Very nice piece.


Cerussite

Formula
PbCO3 
Crystal System
Orthorhombic 
Crystal Habit
Reticulate, Massive - Granular, Crystalline - Coarse 
Cleavage
Distinct, Distinct, None 
Luster
Adamantine 
Color
colorless, white, gray, blue, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Mineralpedia
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Dadsonite

#BAC60763
Locality
Graf Jost-Christian mine, Wolfsberg, Saxony, Harz Mtns., Germany 
Formula
Pb23Sb25S60Cl 
Availability
Sold
Size
7 x 4.5 x 2.5 cm - Sm Cabinet 
Tagged
sulfide  

Bundles of dark grey acicular Dadsonite.


Dadsonite

Formula
Pb23Sb25S60Cl 
Crystal System
Monoclinic 
Crystal Habit
Fibrous 
Luster
Metallic 
Color
lead gray, gray 
Streak
black 
Class
Monoclinic 
Hardness
2.5 
Collection
William & Anne Cook Collection

Darapskite

with Krohnkite - #BAC60609
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Na3(SO4)(NO3)·H2
Availability
Sold
Size
6 x 2 x 3 cm - Sm Cabinet 

Crystalline white Darapskite with blue Krohnkite.


Darapskite

Formula
Na3(SO4)(NO3)·H2
Crystal System
Monoclinic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
2.5 
Collection
William & Anne Cook Collection

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