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Recently Released New Additions

New Mineral Additions

Thursday, 21 February 2013 12:00 PM

Introducing the "New Mineral Additions" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including lepidolite, and minyulite and more from places like Maxixe mine, Taquaral, Itinga, Minas Gerais, Brazil, and South Rasmussen Ridge mine, Soda Springs, Caribou Co., Idaho, United States.

Lepidolite - 35295
Lepidolite - 35295

Lepidolite

#35295
Locality
Maxixe mine, Taquaral, Itinga, Minas Gerais, Brazil 
Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Availability
Available
Price
$30.00
Size
3.5 x 3.5 x 3 cm - Miniature 

Purple Lepidolite ball otherwise known as "ball-peen" lepidolite.


Lepidolite

Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Crystal System
Monoclinic 
Crystal Habit
Platy, Foliated, Massive 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless, gray white, lilac, yellowish, white 
Streak
white 
Class
Monoclinic 
Fracture
Uneven 
Hardness
2.5-3 
Mineralpedia
View Lepidolite
On Dakota Matrix
Previously Sold Lepidolite
On Dakota Matrix
Other Available Lepidolite
WebMineral
View Lepidolite
Mindat
View Lepidolite
NEW FIND
Minyulite - 35346
Minyulite - 35346

Minyulite

with Wavellite - #35346
Locality
South Rasmussen Ridge mine, Soda Springs, Caribou Co., Idaho, United States 
Formula
KAl2(PO4)2F·4H2O 
Availability
Available
Price
$40.00
Size
4.5 x 2.5 x 2 cm - Miniature 
Tagged
phosphate  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

The Minyulite is hard to discern from Wavellite visually. But as can be seen the Minyulite often crystallizes in longer, uneven acicular lengths as on this specimen. The Wavellite occurs in spheroidal clusters composed of tightly packed prismatic crystals of consistent lengths. The radial sections of the Wavellite show a very even growth radius.


Minyulite

Formula
KAl2(PO4)2F·4H2O 
Crystal System
Orthorhombic 
Crystal Habit
Acicular to prismatic crystals in radial goups. 
Cleavage
Perfect 
Luster
Silky 
Color
Mostly colorless, can also be green, white, light green 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Uneven 
Hardness
3.5 
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Mineralpedia
View Minyulite
On Dakota Matrix
Previously Sold Minyulite
On Dakota Matrix
Other Available Minyulite
WebMineral
View Minyulite
Mindat
View Minyulite

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