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Rare & Systematic Minerals

Friday, 07 February 2020 09:00 PM

Introducing the "Rare & Systematic Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including beryl, quartz, and spodumene and more from places like Teofilo Otoni, Minas Gerais, Southeast Region, Brazil, Cathedral Rock, Ravalli Co., Montana, United States, and Resplendor, Minas Gerais, Brazil.

Beryl

var. aquamarine - #AH52149
Locality
Teofilo Otoni, Minas Gerais, Southeast Region, Brazil 
Formula
Be3Al2Si6O18 
Availability
Available
Price
$125.00
Size
5.5 x 1 x 1 cm - Sm Cabinet 
Tagged
beryllium , pegmatite mineral  

Gemmy light aqua blue terminated crystal with good luster and nice vertical striations.


Beryl

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
Collection
Arnold G Hampson Collection
Mineralpedia
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Previously Sold Beryl
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Quartz

var. Smoky - #49462
Locality
Cathedral Rock, Ravalli Co., Montana, United States 
Formula
SiO2 
Availability
Available
Price
$40.00
Size
7 x 2.3 x 1.8 cm - Sm Cabinet 

A single very dark brown quartz crystal to 7cm. A great specimen from Chris van Laer's collection. Chris was a fantastic field collector in Montana and Idaho.


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
Collection
Chris van Laer Collection
Mineralpedia
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Previously Sold Quartz
On Dakota Matrix
Other Available Quartz
WebMineral
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Mindat
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Spodumene

var. kunzite - #AH52178
Locality
Resplendor, Minas Gerais, Brazil 
Formula
LiAlSi2O6 
Availability
Available
Price
$50.00
Size
4.5 x 2.5 x 1.5 cm - Miniature 
Tagged
pegmatite mineral  

Rich, gemmy, lilac pink Spodumene crystal.


Spodumene

Formula
LiAlSi2O6 
Crystal System
Monoclinic 
Crystal Habit
Bladed, Prismatic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
grayish white, pink, violet, emerald green, yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
6.5-7 
Collection
Arnold G Hampson Collection
Mineralpedia
View Spodumene
On Dakota Matrix
Previously Sold Spodumene
On Dakota Matrix
Other Available Spodumene
WebMineral
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Mindat
View Spodumene

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