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Michigan & Mixed Minerals

Friday, 12 May 2017 06:00 PM

Introducing the "Michigan & Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including allophane, axinite-(fe), baryte, beryl, bismuth, and calcite and more from places like Tip Top Tunnel, Socorro Co., New Mexico, United States, Thomaston Dam RR cut, Litchfield Co., Connecticut, United States, Quiruvilca mine, Santiago de Chuco prov., La Libertad dept., Peru, Wah Wah Mts, Beaver Co., Utah, United States, Lane's Bismuth mine, Monroe, Fairfield Co., Connecticut, United States, and French Creek mines, Chester Co., Pennslyvania, United States.

Allophane

#PD46900
Locality
Tip Top Tunnel, Socorro Co., New Mexico, United States 
Formula
Al2O3(SiO2)1.3-2.0·2.5-3.0H2
Availability
Sold
Size
6 x 3.5 x 3 cm - Sm Cabinet 

Bright blue crystalline, bubbly or botryoidal masses throughout matrix. Ex. New Mexico School of Mines.


Allophane

Formula
Al2O3(SiO2)1.3-2.0·2.5-3.0H2
Crystal System
No Crystals 
Crystal Habit
Encrustations, Stalactitic, Botryoidal 
Cleavage
None, None, None 
Luster
Waxy 
Color
white, green, blue, yellow, brown 
Streak
white 
Class
Amorphous - No Crystals 
Fracture
Conchoidal 
Hardness
Collection
Phillips Collection

Axinite-(Fe)

#PD46887
Locality
Thomaston Dam RR cut, Litchfield Co., Connecticut, United States 
Formula
Ca4Fe2+2Al4[B2Si8O30](OH)2 
Availability
Sold
Size
8 x 5 x 3 cm - Sm Cabinet 

Light purplish tabular crystals of Axinite 4cm.


Axinite-(Fe)

Formula
Ca4Fe2+2Al4[B2Si8O30](OH)2 
Crystal System
Triclinic 
Crystal Habit
Massive - Granular, Lamellar 
Cleavage
Distinct, Poor, Poor 
Luster
Vitreous (Glassy) 
Color
brown, purplish blue, gray, greenish yellow 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle - Conchoidal 
Hardness
6.5-7 
Collection
Phillips Collection

Baryte

with included Realgar - #46927
Locality
Quiruvilca mine, Santiago de Chuco prov., La Libertad dept., Peru 
Formula
BaSO4 
Availability
Available
Price
$60.00
Size
3 x 2 x 2 cm - Thumbnail 

Tabular yellow crystals of Baryte colored a flaming orange by included Realgar/Orpiment.


Baryte

Formula
BaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Massive - Fibrous 
Cleavage
Perfect, Perfect, Imperfect 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, grayish white, brownish white, dark brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Mineralpedia
View Baryte
On Dakota Matrix
Previously Sold Baryte
On Dakota Matrix
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Beryl

#46925
Locality
Wah Wah Mts, Beaver Co., Utah, United States 
Formula
Be3Al2Si6O18 
Availability
Sold
Size
4 x 2 x 1.5 cm - Miniature 
Tagged
beryllium  

Nice small specimen with three rare, red Beryl crystals. The largest is 4.5mm and is fractured at the termination. The other crystal is 4mm and is nicely terminated. The third crystal is not as good and is partially covered. These seem to be very hard to obtain these days. 


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 
Mineralpedia
View Beryl
On Dakota Matrix
Previously Sold Beryl
On Dakota Matrix
Other Available Beryl
WebMineral
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Mindat
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Bismuth

#PD46903
Locality
Lane's Bismuth mine, Monroe, Fairfield Co., Connecticut, United States 
Formula
Bi 
Availability
Available
Price
$30.00
Size
7.5 x 6.5 x 4 cm - Sm Cabinet 
Tagged
native element  

A representative specimen from this old locality with metallic, brassy Bismuth crystal grains to 3mm. Sparse.


Bismuth

Formula
Bi 
Crystal System
Trigonal 
Crystal Habit
Platy, Lamellar, Granular 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
silver white, pinkish white, red 
Streak
silver white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Uneven 
Hardness
2-2.5 
Collection
Phillips Collection
Mineralpedia
View Bismuth
On Dakota Matrix
Previously Sold Bismuth
On Dakota Matrix
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Mindat
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Calcite

#PD46897
Locality
French Creek mines, Chester Co., Pennslyvania, United States 
Formula
CaCO3 
Availability
Available
Price
$75.00
Size
5 x 2 x 4 cm - Miniature 
Tagged
carbonate  

A beautiful yellow color rhomnbic crystal to 1.5cm. The color is fantastic, like a sherry color. Barely any knicks, almost perfect and ex-Richard V. Gaines collection.


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Phillips Collection
Mineralpedia
View Calcite
On Dakota Matrix
Previously Sold Calcite
On Dakota Matrix
Other Available Calcite
WebMineral
View Calcite
Mindat
View Calcite

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