Marin Mineral
Mixed Minerals
October 1, 2020  ·  10 specimens

CT648 - Pyrite  sold

La Rioja, Navajun, Spain
Miniature - 3.2 x 3.1 x 3.1 cm



(click on an image to enlarge)

Pyrite Pyrite Pyrite Pyrite

Classic single Pyrite cube from Spain, 3 cm on edge and 4.5cm on the diagonal. Complete and undamaged.


CT339 - Huebnerite with Quartz  sold

Huayllapon Mine, Pasto Bueno, Ancash Dept., Peru
Small Cabinet - 7 x 5.5 x 4.5 cm



(click on an image to enlarge)

Huebnerite with Quartz Huebnerite with Quartz Huebnerite with Quartz Huebnerite with Quartz

Aesthetic, undamaged cluster of Huebnerite crystals surrounded by clear Quartz crystals. Ex. Chuck Trantham collection. HIs old label notes that he bought this for $100 from Al McGuinness back in 1978.


K844 - Prehnite  sold

Merelani Hills, Arusha, Tanzania
Miniature - 4 x 3.5 x 2 cm



(click on an image to enlarge)

Prehnite Prehnite Prehnite Prehnite

Gorgeous clean and translucent to transparent Prehnite rosette. There is a contact at the base otherwise it's undamaged with a smooth, flat backside where is was likely plucked off a Calcite crystal.


CT604 - Calcite, Barite on Fluorite  sold

Minerva Mine, Cave-in-Rock, Hardin Co., Illinois, USA
Cabinet - 15 x 6 x 4 cm



(click on an image to enlarge)

Calcite, Barite on Fluorite Calcite, Barite on Fluorite Calcite, Barite on Fluorite Calcite, Barite on Fluorite Calcite, Barite on Fluorite Calcite, Barite on Fluorite Calcite, Barite on Fluorite

Large specimen of purple and yellow Fluorite crystals that are covered on top and sides by white bladed Barite crystals and yellow scalenohedral Calcite crystals. In good condition, nothing but crystals everywhere.


D555 - Tsavorite  sold

Merelani Hills, Arusha, Tanzania
Thumbnail - 1.4 x 1 x 0.7 cm



(click on an image to enlarge)

Tsavorite Tsavorite Tsavorite Tsavorite

Gemmy single Tsavorite (Grossular) crystal with Graphite. Excellent color and undamaged.


D489 - Torbernite  sold

Unknown
Miniature - 4.5 x 4 x 2.5 cm



(click on an image to enlarge)

Torbernite Torbernite Torbernite

Platy green crystals of Torbernite on matrix. Ex. Chuck Trantham collection without any labels.


D720 - Copper   $1,250  available

Hekla Mine, Houghton Co., Michigan, USA
Small Cabinet - 7.5 x 6.5 x 3.6 cm



(click on an image to enlarge)

Copper Copper Copper Copper Copper

Well crystallized Copper specimen with a grouping of good crystals rising up off larger, thick crystals at the base.


CT666 - Stilbite with Mordenite  sold

Skookumchuck Dam, near Bucoda, Thurston Co., Washington, USA
Small Cabinet - 8 x 5 x 3 cm



(click on an image to enlarge)

Stilbite with Mordenite Stilbite with Mordenite Stilbite with Mordenite Stilbite with Mordenite

Cluster of white Stilbite crystals with Mordenite, nothing but crystals everywhere, an excellent example for the species from the USA. Ex. Chuck Trantham collection. Chuck worked at this dam and collected many fine zeolites. His old handwritten card indicated it was collected from the left abuttment in 1970. This looks like a good one and it it must have been, as Chuck selected it to save in his personal collection.


CT656 - Heulandite with Mordenite  sold

Amudika River, near Mirny, Yakutia, Siberia, Russia
Miniature - 4.2 x 3 x 2.2 cm



(click on an image to enlarge)

Heulandite with Mordenite Heulandite with Mordenite Heulandite with Mordenite

Bi-colored Heulandite crystal with Mordenite. A fine quality double-terminated Heulandite 2cm wide. Hard to find old specimen from Chuck Trantham personal collection.


CT658 - Heulandite with Mordenite, Calcite  sold

Amudika River, near Mirny, Yakutia, Siberia, Russia
Miniature - 3.5 x 3 x 2 cm



(click on an image to enlarge)

Heulandite with Mordenite, Calcite Heulandite with Mordenite, Calcite Heulandite with Mordenite, Calcite Heulandite with Mordenite, Calcite

Bi-colored Heulandite crystal with Mordenite and Calcite crystals. A fine quality double-terminated Heulandite 2.2cm wide. Hard to find old specimen from Chuck Trantham personal collection.


« All updates
©2026 Marin Mineral