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 pyrargyrite, salammoniac, soddyite, stibnite, stringhamite, and tangdanite and more from places like San Juan de Rayas mine, Guanajuato, Mexico, Ravat Village, Yagnob River, Zeravshan Range, Sughd, Tajikistan, Swambo Hill, Katanga, Democratic Republic of Congo, Qingjiang mine, Wuning Co., Jiujiang, Jiangxi, China, Christmas mine, Gila Co., Arizona, United States, and Lovelock mine, Churchill Co., Nevada, United States.

Pyrargyrite

#BN51697
Locality
San Juan de Rayas mine, Guanajuato, Mexico 
Formula
Ag3SbS3 
Availability
Sold
Size
2 x 1.7 x 1.8 cm - Thumbnail 
Tagged
sulfide , silver  

A sweet thumbnail of silvey prismatic crystals with a deep red internal color shown in some areas of the photos. The largest crystal is 1.2cm.


Pyrargyrite

Formula
Ag3SbS3 
Crystal System
Trigonal 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
Poor, None, None 
Luster
Sub Metallic 
Color
deep red, red gray 
Streak
cherry red 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5 
Collection
Dr. Buford Nichols Collection

Salammoniac

#55610
Locality
Ravat Village, Yagnob River, Zeravshan Range, Sughd, Tajikistan 
Formula
NH4Cl 
Availability
Sold
Size
3 x 0.7 x 0.4 cm - Thumbnail 

Bizzar weird crystal group shaped like a feather. These crystals are very hard to come by and rare in nature.


Salammoniac

Formula
NH4Cl 
Crystal System
Isometric 
Crystal Habit
Encrustations 
Cleavage
Poor, Poor, Poor 
Luster
Vitreous (Glassy) 
Color
colorless, white, grayish, yellow, brown 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
1.5-2 

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

Stibnite

#AH55675
Locality
Qingjiang mine, Wuning Co., Jiujiang, Jiangxi, China 
Formula
Sb2S3 
Availability
Sold
Size
9 x 6 x 4 cm - Sm Cabinet 
Tagged
sulfide  

Excellent set of Stibnite crystals to 6cm.


Stibnite

Formula
Sb2S3 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Striated, Granular 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
lead gray, bluish lead gray, steel gray, black 
Streak
blackish gray 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Stibnite
On Dakota Matrix
Previously Sold Stibnite
On Dakota Matrix
Other Available Stibnite
WebMineral
View Stibnite
Mindat
View Stibnite

Stringhamite

with Whelanite - #55663
Locality
Christmas mine, Gila Co., Arizona, United States 
Formula
CaCuSiO4·H2
Availability
Sold
Size
4.5 x 4 x 3 cm - Miniature 
Tagged
copper  

Azure blue "spots" of Stringhamite to 5mm across with sky blue Whelanite and white Torbermorite (?).


Stringhamite

Formula
CaCuSiO4·H2
Crystal System
Monoclinic 
Crystal Habit
Aggregates 
Cleavage
Good, Imperfect 
Luster
Vitreous (Glassy) 
Color
azure, blue violet, dark blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Hardness

Tangdanite

(aka clinotyrolite) - #55623
Locality
Lovelock mine, Churchill Co., Nevada, United States 
Formula
Ca2Cu9(AsO4)4(SO4)0.5(OH)9 9H2
Availability
Sold
Size
6 x 4 x 4 cm - Sm Cabinet 
Tagged
arsenate , copper  

I have previously sold this occurence Tangdanite as Clinotyrolite, which has been discredited as being the same as Tangdanite. Mindat also states: "Unique combination of elements (the only Ca-Cu arsenate-sulphate mineral known)."

The crystals are stunning in-hand and even more so under the microscope. These are flat-lying to about 2mm across. Some of crystals are free-standing.


Tangdanite

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