Marin Mineral
Mixed Minerals
November 29, 2018  ·  15 specimens

C631 - Stilbite on Quartz over Calcite   $1,200  available

Jalgaon, Maharashtra State, India
Cabinet - 10.5 x 4 x 2 cm



(click on an image to enlarge)

Stilbite on Quartz over Calcite Stilbite on Quartz over Calcite Stilbite on Quartz over Calcite

Laterally compressed translucent white Calcite crystal completely covered by a layer of sugary Quartz crystals, with attached pink Stilbite crystals. Unusual specimen that is reminiscent of Steve Smale's specimen known as 'The Cricket Bat' (see page 117 of the Smale Collection book). A couple of the Stilbite crystals are incomplete, otherwise undamaged, with the Stilbite only on one side. I've never seen another like this.


C632 - Silver  sold

Batopilas, Chihuahua, Mexico
Small Cabinet - 5.5 x 4.5 x 4 cm



(click on an image to enlarge)

Silver Silver Silver

Vein of white Calcite loaded with crytalline Silver with lots of exposed Silver crystals on top. The Silver is present all throughout the Calcite, top to bottom. Out of an old collection from the 1970s.


C634 - Silver   $750  available

Batopilas, Chihuahua, Mexico
Small Cabinet - 7 x 6 x 5.5 cm



(click on an image to enlarge)

Silver Silver Silver Silver

Vein of white Calcite loaded with crytalline Silver with lots of exposed Silver crystals on top. The Silver is present all throughout the Calcite, top to bottom. Out of an old collection from the 1970s.


C635 - Inesite  sold

Wessels Mine, Kuruman, South Africa
Small Cabinet - 7 x 5.5 x 3 cm



(click on an image to enlarge)

Inesite Inesite Inesite Inesite Inesite

Old specimen of red Inesite in radial crystals groups on matrix of Xonotlite, with minor amounts of Calcite. Free of damage, fine specimen.


C636 - Tanzanite with Calcite  sold

Merelani Hills, Arusha, Tanzania
Small Cabinet - 7 x 5.5 x 3 cm



(click on an image to enlarge)

Tanzanite with Calcite Tanzanite with Calcite Tanzanite with Calcite

Deep purple blue Tanzanite crystal perched atop a matrix of Tanzanite, Calcite, and Graphite. The Tanzanite is translucent with a jagged termination, and is undamaged. A fine, showy matrix Tanzanite that won't break the bank.


C637 - Prehnite  sold

Merelani Hills, Arusha, Tanzania
Small Cabinet - 8 x 3.5 x 3 cm



(click on an image to enlarge)

Prehnite Prehnite Prehnite Prehnite

Along with many other 'world's best of species', Merelani produces the world's best Prehnites (in my opinion). This fantastic specimen is a complete undamaged floater that looks like it was constructed by dropping little grains of Prehnite atop each other until they formed this tall stack of crystals. The rear bottom is black from inclusions of Graphite, and there are Laumontite crystals included on one side near the base. One of the best Merelani yellow Prehnites I've owned.


C638 - Prehnite  sold

Merelani Hills, Arusha, Tanzania
Miniature - 4.5 x 3 x 2 cm



(click on an image to enlarge)

Prehnite Prehnite Prehnite Prehnite

Outstanding, undamaged cluster of blue Prehnite, crystallized front and back. Rarely do you see blue Prehnites of this quality with such good crystal form. These are also color change, producing different shades of blue in indoor versus outdoor lighting.


C639 - Wulfenite  sold

Los Lamentos, Chihuahua, Mexico
Small Cabinet - 5.3 x 3.8 x 3 cm



(click on an image to enlarge)

Wulfenite Wulfenite Wulfenite Wulfenite

Orange Wulfenite crystals on Calcite coated by Desclosite. The Wulfenite reach 2cm in size and have great color and luster. There are two broken off crystals, but all the remaining crystals are undamaged. Highly showy display specimen.


C640 - Rhodochrosite after Shell  sold

Kertch, Crimea, Ukraine
Miniature - 4.9 x 3.5 x 3 cm



(click on an image to enlarge)

Rhodochrosite after Shell Rhodochrosite after Shell Rhodochrosite after Shell Rhodochrosite after Shell

A fossil bivalve shell that has been completely replaced by pink Rhodochrosite. The shell is wonderfully preserved with both sides present and in perfect condition. One end has been cut to reveal the bubbly pink Rhodochrosite inside.


C641 - Rhodochrosite after Shell  sold

Kertch, Crimea, Ukraine
Miniature - 4 x 3 x 3 cm



(click on an image to enlarge)

Rhodochrosite after Shell Rhodochrosite after Shell Rhodochrosite after Shell Rhodochrosite after Shell

A fossil bivalve shell that has been completely replaced by pink Rhodochrosite. The shell is wonderfully preserved with both sides present though not complete. One side has been cut to reveal the bubbly pink Rhodochrosite inside.


C642 - Brucite   $400  available

Killa Saifullah, Balochistan, Pakistan
Small Cabinet - 8 x 7 x 3.5 cm



(click on an image to enlarge)

Brucite Brucite Brucite Brucite

Large, solid radial mass of Brucite on matrix. This is an uncommon example well crystallized all around, characteristic of open pocket growth and not growth in tight, contacted seams as are most. Translucent, thick and sturdy.

SM361 - Fluorite  sold

Elmwood Mine, Smith County, Tennessee
Small Cabinet - 9.0 x 6.2 x 3.7 cm



(click on an image to enlarge)

Fluorite Fluorite Fluorite Fluorite Fluorite Fluorite

The beautiful Fluorites produced by The Elmwood Mine are American Classics. Here is a wonderful example with a group of light purple Fluorite crystals topped with white Barite and several double terminated clear Calcite crystals. The bottom matrix consists of amber color Sphalerite.


SM362 - Sphalerite  sold

Elmwood Mine, Smith County, Tennessee
Small Cabinet - 6.7 x 4.3 x 4.3 cm



(click on an image to enlarge)

Sphalerite Sphalerite Sphalerite Sphalerite

The beautiful Sphalerite crystals produced by The Elmwood Mine in Tennessee are American Classics. Here is a wonderful example with a cluster of gemmy Sphalerite crystals on a druzy Quartz and Calcite covered matrix. Contact to one crystal, otherwise near perfect.


SM363 - Smithsonite replacing Calcite  sold

San Antonio Mine, Chihuahua, Mexico
Cabinet - 12.0 x 9.0 x 4.6 cm



(click on an image to enlarge)

Smithsonite replacing Calcite Smithsonite replacing Calcite Smithsonite replacing Calcite Smithsonite replacing Calcite Smithsonite replacing Calcite

The specimen shown is a specimen that has a thin layer of yellow Smithsonite crystals covering pseudomorphed scalenohedral Calcite crystals. It's an aesthetic example of a multi-generation pseudomorph with interesting internal crystal structure showing the original Calcite crystals completely replaced with some other species, then Smithsonite covering all.


SM394 - Cinnabar crystals on Calcite with Quartz  sold

Tongren Prefecture, China
Miniature - 4.2 x 3.2 x 2.4 cm



(click on an image to enlarge)

Cinnabar crystals on Calcite with Quartz Cinnabar crystals on Calcite with Quartz Cinnabar crystals on Calcite with Quartz Cinnabar crystals on Calcite with Quartz

A 1cm wide group of sharply terminated Cinnabar crystals on white Calcite crystals is seen in the center of this specimen surrounded by yellow, iridescent Quartz crystals. The Cinnabar crystals are also slightly iridescent and have no damage other than very minor edge chipping.


« All updates
©2026 Marin Mineral