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Mixed Minerals

Friday, 31 July 2020 08:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including elbaite, fluorapophyllite-(k), fluorite, gadolinite-(y), gillespite, and gold and more from places like Tanco pegmatite, Bernic Lake, Manitoba, Canada, Pune dist., Maharashtra, India, Minerva #1 mine, Hardin Co., Illinois, United States, Ytterby, Resaro, Vaxholm, Stockholm, Sweden, MacMillian Pass, Itsy Mountains, Yukon Territory, Canada, and Bessie G mine, La Plata Co., Colorado, United States.

Elbaite

var. rubellite - #53789
Locality
Tanco pegmatite, Bernic Lake, Manitoba, Canada 
Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Availability
Available
Price
$250.00
Size
25 x 15 x 10 cm - Cabinet 
Tagged
pegmatite mineral  

Large, heavy specimen of purple Lepidolite with deep pink or lilac colored Elbaite, variety rubellite, to 8cm long and 4cm wide. Collected by Dr. David London.

Because of the size and weight of the specimen, an additional charge is calculated into the shipping cost. Exact costs will be determined at the post office and a refund or a request for more funds will be issued.


Elbaite

Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Crystal System
Trigonal 
Crystal Habit
Striated, Prismatic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue, colorless, green, yellow, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Sub Conchoidal 
Hardness
7.5 
Collection
Dr. David London Collection
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Fluorapophyllite-(K) - WR53805
Fluorapophyllite-(K) - WR53805

Fluorapophyllite-(K)

#WR53805
Locality
Pune dist., Maharashtra, India 
Formula
KCa4Si8O20F·8H2
Availability
Sold
Size
5 x 3.5 x 2 cm - Miniature 

Incredible, eye-catching, glassy green crystal group to 1.5cm on white Stilbite. Very nice piece!


Fluorapophyllite-(K)

Collection
Willard L. Roberts Collection

Fluorite

with Calcite - #AH53781
Locality
Minerva #1 mine, Hardin Co., Illinois, United States 
Formula
CaF2 
Availability
Sold
Size
7.5 x 6.5 x 3.5 cm - Sm Cabinet 

Beautiful light to dark purple, color zoned, cubic crystals of Fluorite to 2cm crown nicely by Calcite.

Comes with a detailed label from Ross Lillie of North Star Minerals


Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection
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Gadolinite-(Y) - PD53751
Gadolinite-(Y) - PD53751

Gadolinite-(Y)

#PD53751
Locality
Ytterby, Resaro, Vaxholm, Stockholm, Sweden 
Formula
Be2Fe2+Y2Si2O10 
Availability
Sold
Size
5 x 3.5 x 3 cm - Miniature 
Tagged
beryllium , REE mineral  

Black mass of Gadolinite with feldspar. Old Ward's label, see prov tab.


Gadolinite-(Y)

Formula
Be2Fe2+Y2Si2O10 
Crystal System
Monoclinic 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
None, None, None 
Luster
Vitreous - Greasy 
Color
brown, green, green black, light green, black 
Streak
greenish gray 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
6.5-7 
Collection
Don Phillips Collection

Gillespite

with Sanbornite & Baryte - #BN53755
Locality
MacMillian Pass, Itsy Mountains, Yukon Territory, Canada 
Formula
BaFe2+Si4O10 
Availability
Sold
Size
6 x 4.5 x 2.5 cm - Sm Cabinet 

Red crystalline Gillespite with yellow Sanbornite.


Gillespite

Formula
BaFe2+Si4O10 
Crystal System
Tetragonal 
Crystal Habit
Aggregates 
Cleavage
Good, Good, Poor 
Luster
Vitreous (Glassy) 
Color
red 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
Collection
Dr. Buford Nichols Collection

Gold

with Coloradoite & Sphalerite - #AH53780
Locality
Bessie G mine, La Plata Co., Colorado, United States 
Formula
Au 
Availability
Sold
Size
7 x 6 x 4 cm - Sm Cabinet 
Tagged
native element , tellurium  

Extremely rich Coloradoite specimen in veins up to 5cm long and 6mm wide. The Gold occurs as small grains 1mm and less in the Coloradoite.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection
Mineralpedia
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