K Mineral Specimens for Sale

Kamphaugite-(Y)

#PD35396

Availability: Available
Price: $50.00

Featured: Featured in Special Editions
Locality: Telemark, Norway
Formula: Ca₂Y₂(CO₃)₄(OH)₂·3H₂O
Size: 2.5 x 1.2 x 1 cm - Thumbnail
Tagged: carbonate, REE mineral

Tiny tannish spheroidal or crude rosettes of rare Kamphaugite-(Y). Kamphaugite-(Y) was first approved as a new IMA mineral in 1987, so fairly recent for a REE mineral.

Kamphaugite-(Y) at Dakota Matrix Kamphaugite-(Y) at WebMineral Kamphaugite-(Y) at MinDat

Karnasurtite-(Ce)

#PD52152

Availability: Available
Price: $75.00
Reduced Price: $40.00

Locality: Kol'skiy, Poluostrov, Lovozero, Kola Peninsula, Russia
Formula: CeTiAlSi₂O₇(OH)₄·3H₂O
Size: 2 x 1 x 1 cm - Thumbnail
Tagged: REE mineral

A 2mm veinlet of honey yellow Karnasurtite-(Ce). Karnasurtite-(Ce) is amorphous, but still an approved IMA mineral and first published in 1959. The mineral may also incorporate lanthanum. It is only found in three localities in Cananda and Russia. This comes with a Russian label.

Karnasurtite-(Ce) at Dakota Matrix Karnasurtite-(Ce) at WebMineral Karnasurtite-(Ce) at MinDat

Kimuraite-(Y)

#PD52151

Availability: Available
Price: $40.00

Featured: Featured in Special Editions
Locality: Kirigo, Hizen-cho, Higashi-Matsuura-gun, Saga, Kyushu Island, Japan
Formula: CaY₂(CO₃)₄·6H₂O
Size: Capsule
Tagged: phosphate, REE mineral
Special Info: Type Locality

White silky looking Kimuraite-(Y). There are approximately 192 IMA and undefined yttrium rare earth minerals.

Kimuraite-(Y) at Dakota Matrix Kimuraite-(Y) at WebMineral Kimuraite-(Y) at MinDat

Krauskopfite

#42759

SOLD

Availability: Sold

Locality: Esquire #1 claim, Fresno Co., California, United States
Formula: BaSi₂O₅·3H₂O
Size: 3.5 x 2 x 2 cm - Miniature
Special Info: Type Locality

Extremely rare barium silicate occuring as an alteration product of Sanbornite. The Krauskopfite can be seen as colorless, very reflective, cleavages to 4mm on the face of the specimen.

Krauskopfite at WebMineral Krauskopfite at MinDat