T Mineral Specimens for Sale

Tangdanite (aka clinotyrolite)

#55623

SOLD

Availability: Sold

Locality: Lovelock mine, Churchill Co., Nevada, United States
Formula: Ca₂Cu₉(AsO₄)₄(SO₄)_0.5(OH)₉ 9H₂O
Size: 6 x 4 x 4 cm - Sm Cabinet
Tagged: arsenate, copper

I have previously sold this occurence Tangdanite as Clinotyrolite, which has been discredited as being the same as Tangdanite. Mindat also states: "Unique combination of elements (the only Ca-Cu arsenate-sulphate mineral known)."

The crystals are stunning in-hand and even more so under the microscope. These are flat-lying to about 2mm across. Some of crystals are free-standing.

Tangdanite at Dakota Matrix Tangdanite at WebMineral Tangdanite at MinDat

Tapiaite with Rruffite

#40837

Availability: Available
Price: $150.00

Locality: Jote mine, Pampa Larga dist., Tierra Amarilla, Copiapó, Atacama, Chile
Formula: Ca₅Al₂(AsO₄)₄(OH)₄ 12H₂O
Size: 3 x 3 x 2.5 cm - Thumbnail
Tagged: arsenate
Special Info: Type & Only Locality

Tiny, less than 1mm, colorless crystal plates of Tapiaite with bluish green Rruffite. Very rare.

Tapiaite at Dakota Matrix Tapiaite at WebMineral Tapiaite at MinDat

Tavorite with Hureaulite & Leucophosphite

#BN55722

SOLD

Availability: Sold

Locality: Tip Top mine, Custer Co., South Dakota, United States
Formula: LiFe³⁺PO₄(OH)
Size: 6.5 x 4.5 x 1.5 cm - Sm Cabinet
Tagged: phosphate, pegmatite mineral

The green of Tavorite is much better in person. It is a small area where the green of the Tavorite is brighter lime green. The rest of the specimen is crystallized Hureaulite.

Tavorite at Dakota Matrix Tavorite at WebMineral Tavorite at MinDat