40% Off Mineral Sale


US$    € EURO    ¥ YEN    £ POUND    CAN$    AUS$    Note

(click on a page number to go to that page:)

1 2 3 4 5 6 7 8 9 10 11 12
13 14

 page 11 / 14  -  prev  -  196 specimens selected  -  next  -  bottom  -  Home 


C315 - Descloisite over Wulfenite $ 280 DISCOUNTED 50% OFF TO $ 140
Los Lamentos, Chihuahua, Mexico
thumbnail - 2.5 x 2 x 1.9 cm


(click on an image to enlarge)

Descloisite over Wulfenite from Los Lamentos, Chihuahua, Mexico [db_pics/pics/c315a.jpg] Descloisite over Wulfenite from Los Lamentos, Chihuahua, Mexico [db_pics/pics/c315b.jpg] Descloisite over Wulfenite from Los Lamentos, Chihuahua, Mexico [db_pics/pics/c315c.jpg]

Blocky Wulfenite crystals coated by Descloisite. Ex. Robert Lambert collection with label. Label is dated 1994.


C285 - Cinnabar in Calcite $ 400 DISCOUNTED 50% OFF TO $ 200 SOLD
Terlingua, Brewster Co., Texas, USA
miniature - 3.8 x 1.6 x 1.3 cm


(click on an image to enlarge)

Cinnabar in Calcite from Terlingua, Brewster Co., Texas, USA [db_pics/pics/c285a.jpg] Cinnabar in Calcite from Terlingua, Brewster Co., Texas, USA [db_pics/pics/c285b.jpg]

Single yellow scalenohedral Calcite crystal with a sharp phantom of Cinnabar. This is a rare specimen from the old mercury mining district of Terlingua, located near the Mexican border. Cinnabar was discovered here in the 1880s, creating a temporary mining town, now nothing remains but a ghost town.


C279 - Cinnabar $ 450 DISCOUNTED 50% OFF TO $ 225 SOLD
Red Bird Mine, Antelope Springs District, Pershing Co., Nevada, USA
cabinet - 9.5 x 5 x 4.5 cm


(click on an image to enlarge)

Cinnabar from Red Bird Mine, Antelope Springs District, Pershing Co., Nevada, USA [db_pics/pics/c279a.jpg] Cinnabar from Red Bird Mine, Antelope Springs District, Pershing Co., Nevada, USA [db_pics/pics/c279b.jpg] Cinnabar from Red Bird Mine, Antelope Springs District, Pershing Co., Nevada, USA [db_pics/pics/c279c.jpg] Cinnabar from Red Bird Mine, Antelope Springs District, Pershing Co., Nevada, USA [db_pics/pics/c279d.jpg]

Deep red, translucent twinned Cinnabar crystals on matrix associated with Quartz crystals. Hard to find specimen from an uncommon old locality.


C272 - color change Dravite $ 150 DISCOUNTED 50% OFF TO $ 75 SOLD
Nchongo, Umba Valley, Tanzania
thumbnail - 1 x 0.9 x 0.8 cm


(click on an image to enlarge)

color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c272a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c272b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality.Transparent red with strong backlighting.


C269 - color change Dravite $ 200 DISCOUNTED 50% OFF TO $ 100 SOLD
Nchongo, Umba Valley, Tanzania
thumbnail - 1.3 x 1.1 x 1 cm


(click on an image to enlarge)

color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c269a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c269b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality.Transparent red with strong backlighting.


C200 - Azurite $ 2000 DISCOUNTED 50% OFF TO $ 1000
Tsumeb, Namibia
small cabinet - 6.2 x 4 x 4.5 cm


(click on an image to enlarge)

Azurite from Tsumeb, Namibia [db_pics/pics/c200a.jpg] Azurite from Tsumeb, Namibia [db_pics/pics/c200b.jpg] Azurite from Tsumeb, Namibia [db_pics/pics/c200c.jpg] Azurite from Tsumeb, Namibia [db_pics/pics/c200d.jpg] Azurite from Tsumeb, Namibia [db_pics/pics/c200e.jpg]

Large group of chunky Azurite crystals. Main crystal is 3.8cm wide across the termination. Translucent along the edges when held to a light. There are small Cerussite crystals present. Undamaged except where it broke away from the host rock on the right side. Comes with an old label from noted Tsumeb collector Carl Acosta and old price of $3,800.


C172 - Feldspar var. Moonstone $ 1500 DISCOUNTED 50% OFF TO $ 750
Namalulu, Tanzania
large cabinet - 21 x 19 x 7 cm


(click on an image to enlarge)

Feldspar var. Moonstone from Namalulu, Tanzania [db_pics/pics/c172a.jpg] Feldspar var. Moonstone from Namalulu, Tanzania [db_pics/pics/c172b.jpg] Feldspar var. Moonstone from Namalulu, Tanzania [db_pics/pics/c172c.jpg]

New find of crystallized moonstone from Tanzania. Individual crystals to 2cm that display a satiny blue color when turned under lighting. This 'Schiller effect' of color is seen at different angles on the different crystals and was therefore not possible to catch in still photos and these are therefore more colorful and attractive in person. Moonstone crystals are rare! Large, relatively flat crystal covered specimen. Biggest of lot with good blue on crystals.


C164 - Axinite $ 350 DISCOUNTED 50% OFF TO $ 175
Puiva, Polar Urals, Russia
miniature - 4.7 x 4 x 3.5 cm


(click on an image to enlarge)

Axinite from Puiva, Polar Urals, Russia [db_pics/pics/c164a.jpg] Axinite from Puiva, Polar Urals, Russia [db_pics/pics/c164b.jpg] Axinite from Puiva, Polar Urals, Russia [db_pics/pics/c164c.jpg]

Transparent purple blades of Axinite on matrix.


T955 - Jamesonite in Apatite $ 200 DISCOUNTED 50% OFF TO $ 100
Siglo XX Mine, Llallagua, Potosi, Bolivia
thumbnail - 1.2 x 1.2 x 1 cm


(click on an image to enlarge)

Jamesonite in Apatite from Siglo XX Mine, Llallagua, Potosi, Bolivia [db_pics/pics/t955a.jpg] Jamesonite in Apatite from Siglo XX Mine, Llallagua, Potosi, Bolivia [db_pics/pics/t955b.jpg] Jamesonite in Apatite from Siglo XX Mine, Llallagua, Potosi, Bolivia [db_pics/pics/t955c.jpg]

Glassy single Apatite crystal from the famous Siglo XX Mine. The Apatite appears to be clear but colored grey due to inclusions of needle-like crystals of Jamesonite. Old dealer price was $400 on this unusual thumbnail.


C353 - Tanzanite $ 450 DISCOUNTED 50% OFF TO $ 225
Merelani Hills, Arusha, Tanzania
miniature - 4 x 2.5 x 2 cm


(click on an image to enlarge)

Tanzanite from Merelani Hills, Arusha, Tanzania [db_pics/pics/c353a.jpg] Tanzanite from Merelani Hills, Arusha, Tanzania [db_pics/pics/c353b.jpg] Tanzanite from Merelani Hills, Arusha, Tanzania [db_pics/pics/c353c.jpg]

A 2cm purple/blue Tanzanite crystal on a Calcite covered matrix with numerous other small partial Tanzanite crystals. Comes with an old label showing a price of $1100.


C371 - Smithsonite $ 1800 DISCOUNTED 50% OFF TO $ 900
Kelly Mine, Magdelena, New Mexico, USA
cabinet - 13 x 6.5 x 4 cm


(click on an image to enlarge)

Smithsonite from Kelly Mine, Magdelena, New Mexico, USA [db_pics/pics/c371a.jpg] Smithsonite from Kelly Mine, Magdelena, New Mexico, USA [db_pics/pics/c371b.jpg] Smithsonite from Kelly Mine, Magdelena, New Mexico, USA [db_pics/pics/c371c.jpg] Smithsonite from Kelly Mine, Magdelena, New Mexico, USA [db_pics/pics/c371d.jpg]

Thick layer of botryoidal blue/green Smithsonite. Large undamaged specimen out of an old collection.


C389 - Stellerite $ 200 DISCOUNTED 50% OFF TO $ 100
Aurangabad Quarry, Maharashtra, India
small cabinet - 8.5 x 5 x 4.5 cm


(click on an image to enlarge)

Stellerite from Aurangabad Quarry, Maharashtra, India [db_pics/pics/c389a.jpg] Stellerite from Aurangabad Quarry, Maharashtra, India [db_pics/pics/c389b.jpg] Stellerite from Aurangabad Quarry, Maharashtra, India [db_pics/pics/c389c.jpg]

Yellow crystal groups of Stellerite with the largest 3.5cm across. Radial groups of crystals that get wider as they extend out. The form reminds me of the fat back tires you sometimes see on motorcycles. Close inspection reveals a highly lustrous surface of interlocking crystals. I got this at the 2018 Tucson show and I only saw five specimens of this style with one dealer.


SM334 - Calcite with Hematite $ 400 DISCOUNTED 50% OFF TO $ 200
Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa
cabinet - 11.0 x 8.5 x 5.5 cm


(click on an image to enlarge)

Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334a.jpg] Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334b.jpg] Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334c.jpg] Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334d.jpg] Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334e.jpg] Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334f.jpg] Calcite with Hematite from Wessels Mine, Kahalari Manganese Field, Northern Cape Province, South Africa [db_pics/pics/SM334g.jpg]

A display specimen of white Calcite crystals hosting a few dark black Hematite crystal groups from this classic locality. An older example from The Charlie Key Collection disbursed a number of years ago. One old label shows a former price of $600. Lots of lustrous, clear and undamaged Calcite crystals and I can only find a couple missing along the back edge.


SM331 - Siderite on Cookeite $ 260 DISCOUNTED 50% OFF TO $ 130
Wheal Jane, Cornwall, England
miniature - 5.0 x 3.7 x 2.3 cm


(click on an image to enlarge)

Siderite on Cookeite from Wheal Jane, Cornwall, England [db_pics/pics/SM331a.jpg] Siderite on Cookeite from Wheal Jane, Cornwall, England [db_pics/pics/SM331b.jpg] Siderite on Cookeite from Wheal Jane, Cornwall, England [db_pics/pics/SM331c.jpg] Siderite on Cookeite from Wheal Jane, Cornwall, England [db_pics/pics/SM331d.jpg] Siderite on Cookeite from Wheal Jane, Cornwall, England [db_pics/pics/SM331e.jpg]

Here's an old English classic that features a large 1.8cm 'ball' of tan color Siderite crystals on a contrasting darker matrix of Cookeite from Cornwall. A very clean, aesthetic old-timer with numerous provenance labels including William Severance, Carter Rich, and Arnold Fisher. An old Trinity Minerals label shows a price of $300.


SM243 - Fluorite and Calcite with Galena $ 280 DISCOUNTED 50% OFF TO $ 140
Chihuahua, Mexico
cabinet - 11.0 x 8.0 x 8.0 cm


(click on an image to enlarge)

Fluorite and Calcite with Galena from Chihuahua, Mexico [db_pics/pics/SM243a.jpg] Fluorite and Calcite with Galena from Chihuahua, Mexico [db_pics/pics/SM243b.jpg] Fluorite and Calcite with Galena from Chihuahua, Mexico [db_pics/pics/SM243c.jpg] Fluorite and Calcite with Galena from Chihuahua, Mexico [db_pics/pics/SM243d.jpg]

This specimen has water-clear fluorite crystals positioned on massive white calcite. A few grey-black galena crystals and some very minor micro pyrite crystals are also in association. The calcite surfaces are smooth showing some evidence of etching. Ex. Frazier's Minerals.

(click on a page number to go to that page:)

1 2 3 4 5 6 7 8 9 10 11 12
13 14

 page 11 / 14  -  prev  -  196 specimens selected  -  next  -  top  -  Home 

©2010-2018 Marin Mineral