Mixed Minerals — Marin Mineral

Mixed Minerals
October 30, 2024 · 11 specimens

P564 - Azurite with Malachite $3,500 available

Milpillas Mine, Cuitaca, Sonora, Mexico
Cabinet - 12 x 7 x 5.5 cm

(click on an image to enlarge)

Deep blue Azurite crystals to over 3cm in size on a matrix that is dusted by a thin layer of green Chrysocolla and Malachite. There is a wide range of crystal sizes that are well distributed across the matrix. Highly aesthetic Azurite specimen in excellent condition - all the crystals are good!

P565 - Pyromorphite sold

Bunker Hill Mine, Kellogg, Idaho, USA
Small Cabinet - 5.7 x 3.8 x 3 cm

(click on an image to enlarge)

Tall clusters of orange, arsenian Pyromorphite crystals on matrix. The crystals have great color with 'wet' luster. Obtained via trade, the previous collector paid $1,850 for this back in 2017. Ex. Rosey collection.

P566 - Rhodochrosite stalactite sold

Capillitas Mine, Catamarca Prov., Argentina
Small Cabinet - 5.5 x 2.5 x 2.5 cm

(click on an image to enlarge)

Single Rhodochrosite stalactite from the Capillitas Mine. The top end has been cut and polished to reveal the internal concentric rings of varying shades of pink and red. The outer surfaces are crystallized. This one has an excellent, translucent deep red center.

P567 - Axinite, Epidote on Albite sold

Thompson Peak, Plumas County, California, USA
Small Cabinet - 8.3 x 7.5 x 4 cm

(click on an image to enlarge)

Matrix of blocky white, porcelain-like Albite crystals hosting purple Axinite crystals and sprays of green Epidote. The Axinite crystals reach 2cm in size and have sharp edges and areas of transparency. This is classic old Californian material collected decades ago by Chuck Trantham.

P568 - Lawsonite sold

Reed Station, Tiburon, Marin Co., California, USA
Small Cabinet - 6.5 x 4 x 3 cm

(click on an image to enlarge)

Blue to white crystals of rare Lawsonite in a Glaucophane schist matrix. Crystals reach 1.8cm in size. Old specimen from the Type locality for the species, collected by Chuck Trantham back in 1968. Rare stuff! Ex. Chuck Trantham.

P569 - Sanidine sold

Itrongay, Betroka, Anosy Region, Madagascar
Miniature - 3.6 x 1.5 x 1.0 cm

(click on an image to enlarge)

Rare old time GEM Sanidine crystal. Feldspar is a mineral not ususally known for fine collector gem crystals, but at this locality in Madagascar, amazing water clear crystals are sometimes found. This is a doubly-terminated crystal in excellent condition, crystallized all around with exceptionally sharp form for the locality. The crystal has a strong yellow coloration and is internally transparent. The faces alternate from smooth and glassy on the narrow sides to a dimpled surface texture on the larger faces. Both ends have good terminations. This is one held in my personal collection for at least 25 years.

P570 - Dioptase on Calcite $2,500 available

Tsumeb, Namibia
Miniature - 4.4 x 3.5 x 1.5 cm

(click on an image to enlarge)

Sharp, lustrous emerald green Dioptase crystals on white Calcite. This is an old piece from the Rock Currier and Carl Acosta collections that I have held onto for 20+ years. Fine quality, undamaged crystals to 1.1cm in size.

P571 - Scheelite on Fluorite $2,500 available

Yaogangxian Mine, Hunan, China
Small Cabinet - 5.5 x 4 x 2 cm

(click on an image to enlarge)

Translucent, tan colored Scheelite crystals to 1.7cm on a bed of purple Fluorite cubes. Despite producing thousands of Fluorite specimens, this combo of Scheelite atop Fluorite crystals is very rare. I have held this piece in my collection for 20+ years and have not seen another like it. Undamaged crystals.

P572 - Veszelyite on Hemimorphite $750 available

Palabanda quarries, Mfouati, Bouenza Department, Republic of the Congo
Miniature - 4 x 3 x 1 cm

(click on an image to enlarge)

Deep blue crystals of Veszelyite on sky blue Hemimorphite. The Veszelyite crystals reach 5mm in size and are well separated. Mined in 2022. The locality is a former Limestone quarry with Lead, Zinc, and Copper mineralization that closed in 2018.

P574 - Alabandite $450 available

Merelani Hills, Arusha, Tanzania
Thumbnail - 2.1 x 2 x 2 cm

(click on an image to enlarge)

Single crystal of Alabandite from the Merelani Taznanite mines. This is one I held for years in my personal Merelani collection due to the unusual growth features seen on the crystal faces.

P575 - Sericite sold

Kengma Tin Deposit, Nandan Co., Guanxi, China
Miniature - 5 x 3.3 x 1 cm

(click on an image to enlarge)

Single crystal of golden-colored Sericite with the appearance of layers of gold foil compressed together and folded. Ex. J.S. Sobolewski collection.

« All updates