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  

Rare Minerals

Sunday, 09 January 2022 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including anthophyllite, antlerite, argentojarosite, aubertite, baricite, and bassetite and more from places like Richmond Soapstone quarry, Cheshire Co., New Hampshire, United States, Chuquicamata mine, El Loa Prov., Antofagasta, Chile, Santa Ana mine, Santa Ana, Mun. de Onavas, Sonora, Mexico, Big Fish River, Dawson dist., Yukon Territory, Canada, and Arcu su Linnarbu, Capoterra, Cagliari prov., Sardinia, Italy.

Anthophyllite

with Magnesio-hornblende - #BW57394
Locality
Richmond Soapstone quarry, Cheshire Co., New Hampshire, United States 
Formula
□Mg7Si8O22(OH)2 
Availability
Sold
Size
7.5 x 5 x 2 cm - Sm Cabinet 

Light greyish green Anthophyllite with dark green Magnesio-hornblende.


Anthophyllite

Formula
[box]Mg7Si8O22(OH)2 
Crystal System
Orthorhombic 
Crystal Habit
Fibrous, Lamellar, Massive 
Cleavage
Perfect, Distinct, Distinct 
Luster
Vitreous - Pearly 
Color
white, greenish gray, green, clove brown, brownish green 
Streak
gray 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
5-6 
Collection
Bill Wilson Collection
SOLD
Antlerite - BW57299
Antlerite - BW57299

Antlerite

#BW57299
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Cu2+3SO4(OH)4 
Availability
Sold
Size
4 x 2.5 x 2.5 cm - Miniature 
Tagged
copper  

Thick tabular emerald green crystals to 2mm in thick placement.


Antlerite

Formula
Cu2+3SO4(OH)4 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Concretionary, Reniform 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
green, light green, emerald green, black, black green 
Streak
pale green 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
Collection
Bill Wilson Collection
Mineralpedia
View Antlerite
On Dakota Matrix
Previously Sold Antlerite
On Dakota Matrix
Other Available Antlerite
WebMineral
View Antlerite
Mindat
View Antlerite

Argentojarosite

#BW57298
Locality
Santa Ana mine, Santa Ana, Mun. de Onavas, Sonora, Mexico 
Formula
AgFe3+3(SO4)2(OH)6 
Availability
Sold
Size
5 x 2.5 x 3 cm - Miniature 
Tagged
silver  

Greenish yellow, waxy-looking Argentojarosite with red Carminite.


Argentojarosite

Formula
AgFe3+3(SO4)2(OH)6 
Crystal System
Trigonal 
Crystal Habit
Micaceous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
brown, yellow, yellow brown 
Streak
yellow 
Class
Trigonal - Ditrigonal Pyramidal 
Hardness
3.5-4.5 
Collection
Bill Wilson Collection

Aubertite

with Copiapite - #BW57380
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Cu2+Al(SO4)2Cl·14H2
Availability
Sold
Size
4 x 3.5 x 3 cm - Miniature 
Tagged
copper  

Light blue earthy Aubertite throughout the mass. The specimen also carries Quartz crystals, which look blue from the adjacent Aubertite. In the photos the crystals that are blue are just Quartz, not Aubertite. For a simple copper-aluminum sulfate it is only found in maybe a few dozen worldwide localities.


Aubertite

Formula
Cu2+Al(SO4)2Cl·14H2
Crystal System
Triclinic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
azure, blue 
Streak
light blue 
Class
Triclinic - Pedial 
Hardness
2-3 
Mineralpedia
View Aubertite
On Dakota Matrix
Previously Sold Aubertite
On Dakota Matrix
Other Available Aubertite
WebMineral
View Aubertite
Mindat
View Aubertite

Baricite

#BW57370
Locality
Big Fish River, Dawson dist., Yukon Territory, Canada 
Formula
Mg3(PO4)2·8H2
Availability
Sold
Size
9 x 2.5 x 3.5 cm - Sm Cabinet 
Tagged
phosphate  

The specimen represents a good example of mineralized Quartz veining with open spaces. The Quartz crystals have grown inward, perpendicular to the walls of the vein. The vein is mineralized with phosphate, in this case Baricite, a Mn-Fe phosphate. Baricite was first found at this locality and has since been found in only another four localities worldwide. It is the magnesium analog of Vivianite. The Baricite in this specimen is a metallic blue with lamellar crystals to 2.5cm. 


Baricite

Formula
Mg3(PO4)2·8H2
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Color
colorless, light blue 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
1.5-2 
Collection
Bill Wilson Collection
Mineralpedia
View Baricite
On Dakota Matrix
Previously Sold Baricite
On Dakota Matrix
Other Available Baricite
WebMineral
View Baricite
Mindat
View Baricite

Bassetite

#BW57391
Locality
Arcu su Linnarbu, Capoterra, Cagliari prov., Sardinia, Italy 
Formula
Fe2+(UO2)2(PO4)2·8H2
Availability
Sold
Size
4.5 x 3.5 x 2.5 cm - Miniature 
Tagged
phosphate  

Light yellow flakey crystals to 1mm.


Bassetite

Formula
Fe2+(UO2)2(PO4)2·8H2
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
bronze, brownish yellow, greenish brown, yellow, olive green 
Streak
greenish white 
Class
Monoclinic - Prismatic 
Hardness
2.5 
Collection
Bill Wilson Collection

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