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Rare Minerals

Friday, 05 March 2021 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including beudantite, caracolite, celestine, hematite, ilmenite, and rosasite and more from places like Tsumeb mine, Tsumeb, Namibia, La Compania mine, Sierra Gordo dist., Antofagasta, Chile, Clait Platte Ranch, Apache Co., Arizona, United States, San Pedro mine, New Placers dist., Santa Fe Co., New Mexico, United States, Duluth Complex, Hibbing, St. Louis Co., Minnesota, United States, and Block 14 Opencut, Broken Hill, New South Wales, Australia.

Beudantite

#PD55250

$75.00 - Available
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Locality: Tsumeb mine, Tsumeb, Namibia
Formula: PbFe³⁺₃(AsO₄)(SO₄)(OH)₆
Availability: Available
Price: $75.00
Size: 5.5 x 4 x 2 cm - Sm Cabinet

Greenish yellow cubic-looking crystals less than 1mm. Very thick coverage and in places good single crystals can be seen.

Beudantite

Formula: PbFe³⁺₃(AsO₄)(SO₄)(OH)₆
Crystal System: Trigonal
Crystal Habit: Blocky - Rhombohedral, Druse, Platy
Cleavage: Perfect, None, None
Luster: Adamantine
Color: brown, green, yellow, dark green, orange
Streak: greenish yellow
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Brittle
Hardness: 4

Collection: Don Phillips Collection

Mineralpedia: View Beudantite
On Dakota Matrix: Previously Sold Beudantite
On Dakota Matrix: Other Available Beudantite
WebMineral: View Beudantite
Mindat: View Beudantite

SOLD

Caracolite

with Tamarugite - #55240

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Locality: La Compania mine, Sierra Gordo dist., Antofagasta, Chile
Formula: Na₂(Pb₂Na)(SO₄)₃Cl
Availability: Sold
Size: 3.5 x 3.5 x 2 cm - Miniature

Pefect little tabular and colorless Caracolite crystals from 0.5 to 1mm. Apparently these are trillings which are twins giving it a pseudo-hexagonal cross-section much like aragonite. These are tabular with very little prism faces. The Pinch label also notes Tamarugite crystals, which I have no idea what they are besides "it's white". There are some yellowish Jarosite crystals scattered around the matrix.

Please see the William Pinch and Terry Szenics labels on the prov. tab.

Caracolite

Formula: Na₂(Pb₂Na)(SO₄)₃Cl
Crystal System: Monoclinic
Cleavage: Perfect, None, None
Luster: Vitreous (Glassy)
Color: blue, colorless, greenish gray, gray
Streak: white
Class: Monoclinic - Prismatic
Hardness: 4.5

Collection: Ex. William Pinch

Mineralpedia: View Caracolite
On Dakota Matrix: Previously Sold Caracolite
On Dakota Matrix: Other Available Caracolite
WebMineral: View Caracolite
Mindat: View Caracolite

SOLD

Celestine

#AH55291

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Locality: Clait Platte Ranch, Apache Co., Arizona, United States
Formula: SrSO₄
Availability: Sold
Size: 9 x 8.5 x 5 cm - Sm Cabinet

Arnold Hampson described this specimen as "Celestine after wood." It's possible, though I haven't yet seen a specimen where there is obvious replacement. It could very well be a deposit of Celestine inside of voids in the wood. Nearly any mineral can replace wood. This specimen is nearly all Celestine. It should only a slight yellow fluoresence under SW UV,

Celestine

Formula: SrSO₄
Crystal System: Orthorhombic
Crystal Habit: Crystalline - Coarse, Massive, Granular
Cleavage: Perfect, Good, None
Luster: Vitreous (Glassy)
Color: blue, brown, colorless, green, gray
Streak: white
Class: Orthorhombic - Dipyramidal
Fracture: Brittle - Conchoidal
Hardness: 3-3.5

Collection: Arnold G Hampson Collection

Mineralpedia: View Celestine
On Dakota Matrix: Previously Sold Celestine
On Dakota Matrix: Other Available Celestine
WebMineral: View Celestine
Mindat: View Celestine

Hematite

with Japan Law twinned Quartz - #AH55275

$50.00 - Available
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Locality: San Pedro mine, New Placers dist., Santa Fe Co., New Mexico, United States
Formula: Fe₂O₃
Availability: Available
Price: $50.00
Size: 3.5 x 3.5 x 3.0 cm - Miniature

I got a real kick out of this specimen when I zeroed in on the Hematite rose and saw the little japanese-law twinned Quartz crystal. It's a perfect little twin 2mm across and waterclear. There is another which is equally nice as shown on the 6th photo. The Hematite rose is nice also and the largest is 6mm across. The twinned Quartz must be a later generation as the rest of the Quartz seems green and is prismatic. There are also some excellent sprays of Epidote. I have convinced myself that the long white prismatic crystals are stacked rhombohedra of Adularia and not apatite.

You will surely enjoy this peice under the scope.