Rare Mineral Specimens - search page

Availability

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Locality

Alcaparossa mine, Cerritos Bayos, El Loa, Antofagasta, Chile

Formula

Fe³⁺₂O(SO₄)₂(H₂O)₄·3H₂O

Size

3 x 2 x 2 cm - Thumbnail

Bright orange prismatic crystals.

Availability

Sold

Locality

Tincalayu mine, Salta, Argentina

Formula

NaB₃O₃(OH)₄

Size

0.7 x 0.4 x 0.2 cm - Thumbnail

Special Info

Type & Only Locality

A small sugary mass of this anhydrous borate found only at the Tincalayu mine. Very rare worldwide.

Availability

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Locality

Kladno, Bohemia, Czech Republic

Formula

NH₄Al₃(SO₄)₂(OH)₆

Size

1.3 x 1 x 0.4 cm - Thumbnail

Ugly creamy brown mass undeserving of IMA status.

Availability

Available

Price

$35.00

Locality

Coal Hill Lead vein, Rossie, St. Lawrence Co., New York, United States

Formula

TiO₂

Size

3 x 2.5 x 2 cm - Thumbnail

Translucent blue crystals less than 1mm with a unique square termination.

Availability

Sold

Locality

Chuquicamata mine, El Loa Prov., Antofagasta, Chile

Formula

Cu²⁺₃SO₄(OH)₄

Size

2 x 1.5 x 1 cm - Thumbnail

Tagged

copper

Terrific glassy green perfent crystals.

Availability

Available

Price

$50.00

Locality

Widowmaker mine, White Canyon, San Juan Co., Utah, United States

Formula

Cu²⁺₃SO₄(OH)₄

Size

6 x 8 x 2.5 cm - Sm Cabinet

Tagged

copper

Green finely crystalline Antlerite with carbonatecyanotrichite on the backside.