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Mostly Rare Minerals

Sunday, 17 March 2024 06:00 PM

Introducing the "Mostly Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including pyromorphite, quartz, stibnite, and topaz and more from places like Yangshuo mine, Yangshuo Co., Guilin, Guangxi Zhuang, China, Chiredzi, Masvingo, Zimbabwe, Carlin Trend, Eureka Co., Nevada, United States, and Khyber Pakhtunkhwa, Pakistan.

Pyromorphite

#63753
Locality
Yangshuo mine, Yangshuo Co., Guilin, Guangxi Zhuang, China 
Formula
Pb5(PO4)3Cl 
Availability
Sold
Size
5 x 3.5 x 2 cm - Miniature 
Tagged
phosphate  

Green, lustrous, free-standing hexagonal crystals to 5mm emanating from a common point. Very nice miniature.


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. amethyst sceptor - #63376
Locality
Chiredzi, Masvingo, Zimbabwe 
Formula
SiO2 
Availability
Available
Price
$350.00
Size
6 x 2.5 x 2.2 cm - Sm Cabinet 

Great specimen of amethyst scepter with phontoms and fascinating Hematite inclusions. 


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
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Stibnite

#63760
Locality
Carlin Trend, Eureka Co., Nevada, United States 
Formula
Sb2S3 
Availability
Available
Price
$175.00
Size
7.5 x 3.8 x 3.5 cm - Sm Cabinet 
Tagged
sulfide  

Superb Stibnite specimen from one of the best in the USA. The crystals measure up to 4mm in 1cm sprays. 


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
Mineralpedia
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Topaz

#63386
Locality
Khyber Pakhtunkhwa, Pakistan 
Formula
Al2SiO4F2 
Availability
Available
Price
$250.00
Size
4.5 x 3.5 x 2.5 cm - Miniature 

Light pink, gemmy, terminated crystal in matrix.


Topaz

Formula
Al2SiO4F2 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Coarse, Prismatic, Massive - Granular 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale blue, yellow, yellowish brown, red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
Mineralpedia
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