Mixed Minerals


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J551 - Franckeite $ 150 SOLD
San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia
miniature - 4.6 x 4.3 x 2.3 cm


(click on an image to enlarge)

Franckeite from San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia [db_pics/pics/J551a.jpg] Franckeite from San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia [db_pics/pics/J551b.jpg] Franckeite from San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia [db_pics/pics/J551c.jpg]

Radiating needles of Franckeite crystals intergrown into a large, massive specimen. Franckeite is a rare sulfosalt consisting of lead, tin, iron, and antimony. An excellent example with fine radiating crystals.


J546 - Franckeite (Var: Potosíite) with Franckeite $ 140
San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia
miniature - 3.8 x 3.1 x 2.5 cm


(click on an image to enlarge)

Franckeite (Var: Potosíite) with Franckeite from San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia [db_pics/pics/J546a.jpg] Franckeite (Var: Potosíite) with Franckeite from San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia [db_pics/pics/J546b.jpg] Franckeite (Var: Potosíite) with Franckeite from San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia [db_pics/pics/J546c.jpg]

A fine example of the rare sulfosalt species, Franckeite, with radiating spear-shaped crystals and what was formerly known as Potosiite (now discredited). Potosiite is the variety of Franckeite that is tin-poor in its chemistry with crystals more tabular in shape. A rare specimen.


J589 - Vesuvianite $ 225
Jeffrey Mine, Asbestos, Quebec, Canada
miniature - 4.0 x 2.8 x 2.6 cm


(click on an image to enlarge)

Vesuvianite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/J589a.jpg] Vesuvianite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/J589b.jpg] Vesuvianite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/J589c.jpg] Vesuvianite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/J589d.jpg] Vesuvianite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/J589e.jpg]

A good sized matrix Vesuvianite specimen, one of the best color combination examples for this type. The matrix is purple mangan Vesuvianite covered by an outer layer of yellow/green Vesuvianite crystals. Largest single crystal in the group is just over 2cm in length. The mine is now closed.


J624 - Anatase on Albite with Quartz $ 150
Kharan, Balochistan, Pakistan
small cabinet - 7.0 x 5.8 x 3.8 cm


(click on an image to enlarge)

Anatase on Albite with Quartz from Kharan, Balochistan, Pakistan [db_pics/pics/J624a.jpg] Anatase on Albite with Quartz from Kharan, Balochistan, Pakistan [db_pics/pics/J624b.jpg] Anatase on Albite with Quartz from Kharan, Balochistan, Pakistan [db_pics/pics/J624c.jpg]

Three Anatase crystals seen on white Albite and Quartz covered matrix. The largest single Anatase crystal is 9mm across. All three crystals are undamaged and translucent at the tips.


J484 - Prehnite $ 300
Merelani Hills, Arusha, Tanzania
miniature - 4.7 x 3.1 x 2.6 cm


(click on an image to enlarge)

Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J484a.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J484b.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J484e.jpg]

Well crystallized Prehnite from recent finds at the Merelani Tanzanite mines. Highly translucent with a greenish yellow color with large, chunky crystals. These recent Prehnites are the best ever found at the locality.


J481 - Prehnite $ 500
Merelani Hills, Arusha, Tanzania
small cabinet - 5.4 x 5.0 x 3.5 cm


(click on an image to enlarge)

Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J481a.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J481b.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/j481d.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/j481e.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/j481f.jpg]

Gemmy bright yellow-green Prehnite in a spherical grouping with sharp ridges of crystals. A small amount of silver-gray Graphite can be seen on one side. There is also an inclusion of blue, incomplete Tanzanite crystals. The quality of the Prehnite is superb with big crystals extending out of the main group with good luster and very translucent. Only minor contact and cleaving in a few areas.


J485 - Prehnite $ 380
Merelani Hills, Arusha, Tanzania
small cabinet - 5.3 x 5.0 x 2.5 cm


(click on an image to enlarge)

Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J485a.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J485b.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J485d.jpg]

Well crystallized Prehnite from recent finds at the Merelani Tanzanite mines. Highly translucent with a greenish yellow color with a crystal habit of parallel bladed/tabular crystals which are a new style (at least to me) not seen until this year. These recent Prehnites are the best ever found at the locality.


J513 - Prehnite $ 300
Merelani Hills, Arusha, Tanzania
miniature - 3.3 x 2.5 x 2.4 cm


(click on an image to enlarge)

Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J513a.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J513b.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J513d.jpg]

Well crystallized Prehnite from recent finds at the Merelani Tanzanite mines. Highly translucent with a greenish yellow color. This one is an exceptional small miniature with very stout, thick crystls forming a 3cm wide radial grouping. No damage to the crystals. These recent Prehnites are the best ever found at the locality.


J536 - Prehnite $ 200
Merelani Hills, Arusha, Tanzania
small cabinet - 5.6 x 4.7 x 2.5 cm


(click on an image to enlarge)

Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J536a.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J536b.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/J536c.jpg]

Gemmy bright yellow-green Prehnite cluster with sharp ridges of crystals. A small amount of silver-gray Graphite can be seen on the bottom. The quality of the Prehnite is superb with big crystals forming an excellent quality specimen with good luster and very translucent.


J547 - Rhodonite with Bustamite and Galena $ 275
Broken Hill, New South Wales, Australia
cabinet - 10.0 x 6.1 x 3.5 cm


(click on an image to enlarge)

Rhodonite with Bustamite and Galena from Broken Hill, New South Wales, Australia [db_pics/pics/J547a.jpg] Rhodonite with Bustamite and Galena from Broken Hill, New South Wales, Australia [db_pics/pics/J547b.jpg] Rhodonite with Bustamite and Galena from Broken Hill, New South Wales, Australia [db_pics/pics/J547c.jpg]

Translucent red color Rhodonite crystals are seen in close association with metallic gray Galena. The matrix consists of mostly compact, massive, pinkish color Bustamite, a calcium manganese silicate. The largest Rhodonite crystal is about 1cm wide and gemmy.


J609 - Copper $ 180
Broken Hill, New South Wales, Australia
small cabinet - 7.0 x 6.0 x 5.0 cm


(click on an image to enlarge)

Copper from Broken Hill, New South Wales, Australia [db_pics/pics/J609a.jpg] Copper from Broken Hill, New South Wales, Australia [db_pics/pics/J609b.jpg] Copper from Broken Hill, New South Wales, Australia [db_pics/pics/J609c.jpg]

This specimen consists of almost 100% green Malachite coated dendritic Copper. It has an interesting sculptural form that still shows a number of Quartz matrix fragments that appear to be floating within the mass of copper.


J600 - Magnetite $ 90
Cerro Huanaquino, Totora, Dept. Potosi, Bolivia
small cabinet - 8.5 x 5.2 x 3.8 cm


(click on an image to enlarge)

Magnetite from Cerro Huanaquino, Totora, Dept. Potosi, Bolivia [db_pics/pics/J600a.jpg] Magnetite from Cerro Huanaquino, Totora, Dept. Potosi, Bolivia [db_pics/pics/J600b.jpg] Magnetite from Cerro Huanaquino, Totora, Dept. Potosi, Bolivia [db_pics/pics/J600c.jpg]

Razor sharp and lustrous octahedrons of Magnetite. The Magnetite forms a continuous layer of textbook octahedral crystals on top of a hard, brecciated matrix. An excellent example of the species with the argest crystal measuring about 8mm wide.


J616 - Fluorite $ 175
Rogerly Mine, Durham, England
cabinet - 11.1 x 6.8 x 3.8 cm


(click on an image to enlarge)

Fluorite from Rogerly Mine, Durham, England [db_pics/pics/J616a.jpg] Fluorite from Rogerly Mine, Durham, England [db_pics/pics/J616b.jpg] Fluorite from Rogerly Mine, Durham, England [db_pics/pics/J616c.jpg]

Transparent forest green color Fluorite crystals cover the entire top of the matrix. The largest single crystal is 3.0cm wide, located in the center of the specimen. It came from the mining activity done at Rogerly in the early 2000's. Bottom has been sawn flat to better display the specimen. Out of a collection, the invoice from 2006 shows a price of $185.


J241 - Spinel $ 165 SOLD
Mahenge, Morogoro, Tanzania
thumbnail - 1.6 x 1.4 x 1.2 cm


(click on an image to enlarge)

Spinel from Mahenge, Morogoro, Tanzania [db_pics/pics/J241a.jpg] Spinel from Mahenge, Morogoro, Tanzania [db_pics/pics/J241b.jpg] Spinel from Mahenge, Morogoro, Tanzania [db_pics/pics/J241c.jpg]

Complete octahedral pink Spinel crystal with good rich color. No damage and only micro chipping.


J243 - Spinel $ 125
Mahenge, Morogoro, Tanzania
thumbnail - 2.3 x 1.7 x 1.6 cm


(click on an image to enlarge)

Spinel from Mahenge, Morogoro, Tanzania [db_pics/pics/J243a.jpg] Spinel from Mahenge, Morogoro, Tanzania [db_pics/pics/J243b.jpg] Spinel from Mahenge, Morogoro, Tanzania [db_pics/pics/J243c.jpg]

Complete octahedral pink Spinel crystal with good color. Slight edge chipping. A very good spinel.

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