Mixed Minerals — Marin Mineral

Mixed Minerals
October 10, 2022 · 10 specimens

LP231 - Euclase sold

Alto Equador, Rio Grande do Norte, Brazil
Thumbnail - 1.3 x 1.3 x 0.9 cm

(click on an image to enlarge)

Complete single Euclase crystal from Alto Equador, Brazil. The crystal is translucent to transparent (at the tip), colorless with a characteristic blue strip up the middle. Complete all around with nice luster and slight surface striations on the large front face.

LP232 - Euclase sold

Alto Equador, Rio Grande do Norte, Brazil
Thumbnail - 1.5 x 1.2 x 0.9 cm

(click on an image to enlarge)

Three intergrown Euclase crystals from Alto Equador, Brazil. The crystals are translucent to transparent (at the tips), colorless with a characteristic blue strip up the middle. Complete all around with nice luster and slight surface striations on the front faces.

LP233 - Thaumasite $300 available

N'Chwanning Mine, Kuruman, South Africa
Thumbnail - 1.1 x 0.6 x 0.5 cm

(click on an image to enlarge)

Transparent single yellow crystal of Thaumasite, a rare mineral species related to Ettringite and Sturmanite found in the Kalahari Manganese fields of South Africa. These were found in the 1990s and I used to be able to buy them many years ago from South African dealer Clive Quiet until supplies dried up. I was fortunate to find this crystal recently from someone who had also bought this from Clive Quiet and stockpiled it until now. It's a complete, undamaged single crystal with great luster and total transparency. A rare, now hard to find gem quality crystal.

LP235 - Thaumasite $350 available

N'Chwanning Mine, Kuruman, South Africa
Thumbnail - 2.8 x 2.5 x 1 cm

(click on an image to enlarge)

Cluster of transparent yellow crystals of Thaumasite, a rare mineral species related to Ettringite and Sturmanite found in the Kalahari Manganese fields of South Africa. These were found in the 1990s and I used to be able to buy them many years ago from South African dealer Clive Quiet until supplies dried up. I was fortunate to find this specimen recently from someone who had also bought this from Clive Quiet and stockpiled it until now. It's a rare matrix specimen from the find. Even while these were available, matrix specimens were always rare, as most were loose single crystals. Some crystals show some wear, regardless, it's a hard to find rarity.

LP236 - Thaumasite $300 available

N'Chwanning Mine, Kuruman, South Africa
Thumbnail - 2.3 x 1.7 x 1 cm

(click on an image to enlarge)

Cluster of transparent yellow crystals of Thaumasite, a rare mineral species related to Ettringite and Sturmanite found in the Kalahari Manganese fields of South Africa. These were found in the 1990s and I used to be able to buy them many years ago from South African dealer Clive Quiet until supplies dried up. I was fortunate to find this specimen recently from someone who had also bought this from Clive Quiet and stockpiled it until now. It's a rare matrix specimen from the find. Even while these were available, matrix specimens were always rare, as most were loose single crystals. This specimen features a larger 1.5cm tall crystal on the left side with smaller crystals to the right. A hard to find rarity.

LP237 - Thaumasite $250 available

N'Chwanning Mine, Kuruman, South Africa
Thumbnail - 1 x 0.5 x 0.5 cm

(click on an image to enlarge)

LP238 - Manganite sold

Atikokan, Rainy River District, Ontario, Canada
Miniature - 5 x 2.7 x 2.7 cm

(click on an image to enlarge)

Cluster of lustrous metallic Manganite crystals from Atikokan. At first glance I thought this was from Ilfeld, Germany because the crystals were so much larger than what I normally see from Canadian Manganite - it has crystals to 1.8cm tall. This is a well documented specimen from the JIm Watson collection (with label and old photograph), and comes with another old label from George and Susan Robinson Minerals that dates to 1978.

MK971 - Olshanskyite, Andradite, Roweite sold

Shijiangshan Mine, Chifeng City, Inner Mongolia, China
Cabinet - 9.5 x 6 x 5.5 cm

(click on an image to enlarge)

Beautiful sprays of white white Olshanskyite crystals with Andradite. These recent finds have produced the world's best Olshanskyite with crystal sizes and quality not seen before. There are also a few brown Roweite crystals. Interestingly, the type locality for Roweite is Franklin, New Jersey, where only one specimen was found. Ex. Len Pisciotta collection.

MK987 - Cavansite sold

Wagholi Quarry, Poona, India
Miniature - 4.7 x 2.1 x 1.2 cm

(click on an image to enlarge)

Exquisite specimen of intergrown spherical aggregates of vivid blue Cavansite with attached Stilbite. Well crytallized all around and undamaged, a floater with no points of contact. Ex. Len Pisciotta collection.

MK985 - Cavansite $400 available

Wagholi Quarry, Poona, India
Miniature - 3.8 x 2.3 x 1.5 cm

(click on an image to enlarge)

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