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0 item @ $0.00  

Mixed Minerals

Sunday, 14 November 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including heulandite-ca, and stibiconite and more from places like Paterson, Passiac Co., New Jersey, United States, and Catorce, San Luis Potosi, Mexico.

Heulandite-Ca

#56940
Locality
Paterson, Passiac Co., New Jersey, United States 
Formula
NaCa4(Si27Al9)O72·24H2
Availability
Available
Price
$40.00
Size
7 x 4.5 x 4 cm - Sm Cabinet 

A pink 2cm excellent crystal of Heulandite with good luster and sharp crystal faces on a bed of mostly Quartz. There is a small spot of the crystal, which is only a contact point of Quartz. Comes with a hand-written label from the Bill Roberts collection.


Heulandite-Ca

Formula
NaCa4(Si27Al9)O72·24H2
Crystal System
Monoclinic 
Crystal Habit
Tabular, Crystalline - Coarse 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
white, reddish white, grayish white, brownish white, yellow 
Streak
white 
Class
Monoclinic 
Fracture
Brittle 
Hardness
3-3.5 

Stibiconite

#56925
Locality
Catorce, San Luis Potosi, Mexico 
Formula
Sb3+Sb5+2O6(OH) 
Availability
Available
Price
$65.00
Size
7 x 5 x 3 cm - Sm Cabinet 

Complete replacement of Stibnite by yellow to creamy white Stibiconite. Excellent preservation of the prior mineral, Stibnite. Crystals range from 3 to 20mm.


Stibiconite

Formula
Sb+++Sb+++++2O6(OH) 
Crystal System
Isometric 
Crystal Habit
Earthy, Encrustations 
Cleavage
None, None, None 
Luster
Vitreous - Dull 
Color
brown, gray, lemon white, light yellow, orange brown 
Streak
light yellow 
Class
Isometric - Hexoctahedral 
Fracture
Earthy 
Hardness
4-5 

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