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Recently Released New Additions

Rare Minerals

Monday, 20 January 2025 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including meliphanite, quartz, ranunculite, stannite, and vanadinite and more from places like Sakhariok Massif, Kola Peninsula, Russia, San Gabriel, Rio Grande do Sul, Brazil, Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo, Zeehan, Tasmania, Australia, and San Carlos dist., Chihuahua, Mexico.

Meliphanite - 63684
Meliphanite - 63684

Meliphanite

#63684
Locality
Sakhariok Massif, Kola Peninsula, Russia 
Formula
Ca4(Na,Ca)4Be4AlSi7O24(F,O)4 
Availability
Available
Price
$50.00
Size
2.2 x 1.2 x 1 cm - Thumbnail 
Tagged
beryllium  

Glassy, lemon yellow, crystals to 4mm across.


Meliphanite

Formula
Ca4(Na,Ca)4Be4AlSi7O24(F,O)4 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
colorless, yellow, yellowish red, red 
Streak
white 
Class
Tetragonal - Disphenoidal 
Fracture
Brittle - Uneven 
Hardness
5-5.5 
On Dakota Matrix
Previously Sold Meliphanite
On Dakota Matrix
Other Available Meliphanite
WebMineral
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Quartz - BAC65309
Quartz - BAC65309

Quartz

ps after Anhydrite - #BAC65309
Locality
San Gabriel, Rio Grande do Sul, Brazil 
Formula
SiO2 
Availability
Available
Price
$80.00
Size
5.5 x 5 x 4 cm - Sm Cabinet 

I found no reference to this locality, perhaps you might know?

Originally labeled as Quartz ps after Laumontite, but looks more like a pseudomorph (or epimorph) after Anhydrite. The centers of the crystals are hollowed out. Any which way, it a nice example of replacement.


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
7 
Collection
William & Anne Cook Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Quartz
On Dakota Matrix
Other Available Quartz
WebMineral
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Mindat
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Ranunculite - BAC65310
Ranunculite - BAC65310

Ranunculite

with Moreauite - #BAC65310
Locality
Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo 
Formula
Al(UO2)(PO3OH)(OH)3·4H2O 
Availability
Available
Price
$55.00
Size
1.3 x 1.4 x 1.7 cm - Thumbnail 
Tagged
phosphate  
Special Info
Radioactive!! 

Yellow pulverulent mass of Ranunculite.


Ranunculite

Formula
Al(UO2)(PO3OH)(OH)3·4H2O 
Crystal System
Monoclinic 
Crystal Habit
Nodular, Platy, Botryoidal 
Cleavage
Perfect, Perfect, None 
Color
golden yellow, canary yellow 
Streak
light yellow 
Class
Monoclinic 
Fracture
Irregular 
Hardness
3 
Collection
William & Anne Cook Collection
Special Info
Radioactive!!
Mineralpedia
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On Dakota Matrix
Previously Sold Ranunculite
On Dakota Matrix
Other Available Ranunculite
WebMineral
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Mindat
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Stannite - 65160
Stannite - 65160

Stannite

#65160
Locality
Zeehan, Tasmania, Australia 
Formula
Cu2FeSnS4 
Availability
Available
Price
$55.00
Size
4 x 4 x 2 cm - Miniature 
Tagged
sulfide , copper , tin  

Metallic, pure  black mass. 


Stannite

Formula
Cu2FeSnS4 
Crystal System
Tetragonal 
Crystal Habit
Massive - Granular, Crystalline - Fine 
Cleavage
Imperfect, None, None 
Luster
Metallic 
Color
blue, grayish black, steel gray 
Streak
black 
Class
Tetragonal - Scalenohedral 
Fracture
Uneven 
Hardness
3.5-4 
Mineralpedia
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On Dakota Matrix
Previously Sold Stannite
On Dakota Matrix
Other Available Stannite
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Mindat
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Vanadinite - AH60798
Vanadinite - AH60798

Vanadinite

#AH60798
Locality
San Carlos dist., Chihuahua, Mexico 
Formula
Pb5(VO4)3Cl 
Availability
Available
Price
$25.00
Size
2.6 x 1.2 x 0.7 cm - Thumbnail 
Tagged
vanadium  

A large excellent crystal 3cm long.


Vanadinite

Formula
Pb5(VO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Globular, Prismatic, Nodular 
Cleavage
None, None, None 
Luster
Adamantine 
Color
brown, brownish yellow, brown red, colorless, yellow 
Streak
brownish yellow 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection
Mineralpedia
View Vanadinite
On Dakota Matrix
Previously Sold Vanadinite
On Dakota Matrix
Other Available Vanadinite
WebMineral
View Vanadinite
Mindat
View Vanadinite

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