Mineral Specimens with Mimetite

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URI-04 - Mimetite - SOLD
Bilbao Mine, Zacatecas, Mexico

small cabinet, 7.9 x 5.8 x 3.4 cm
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ex.  Harold Urish

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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-04a.jpg]
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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-04b.jpg]
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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-04c.jpg]
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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-04d.jpg]

One of the big surprises in this collection was the best specimen of this old late-1970s material that I have yet seen in mineral collecting: a mimetite from the Bilbao Mine - NOT form the much more common Ojuela or San Pedro Correlitos locales. If you look closely at the form, the lustre, you can spot the difference. The waxy, silky surface to these stands out, at their best. Also, the matrix underneath is not the typical gossan you would see at hte other two Mexican mimetite locales. This is a beautiful, 3-dimensional, aesthetic specimen in its own right - but it ALSO has strong significance for its unique locality and for the top quality it represents, from the locale. Comes with custom lucite base for display.


URI-12 - Mimetite - SOLD
Bilbao Mine, Zacatecas, Mexico

small cabinet, 6.5 x 4.7 x 2.2 cm
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ex.  Harold Urish

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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-12a.jpg]
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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-12b.jpg]
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Mimetite from Bilbao Mine, Zacatecas, Mexico [db_pics/pics/uri-12c.jpg]

A thin crust supports a carpet of golden yellow, translucent spheres of mimetite, to 1 cm across. The color is just about as good as it gets from this mine. One of the big surprises in this collection was findign two specimens of this old late-1970s material, the best for sale that I have yet seen in mineral collecting: a mimetite from the Bilbao Mine - NOT form the much more common Ojuela or San Pedro Correlitos locales. If you look closely at the form, the lustre, you can spot the difference. The waxy, silky surface to these stands out, at their best. Also, the matrix underneath is not the typical gossan you would see at hte other two Mexican mimetite locales. This is a beautiful, 3-dimensional, aesthetic specimen in its own right - but it ALSO has strong significance for its unique locality and for the top quality it represents, from the locale. This would cost the same as a San Pedro piece, but it is actually MUCH more desirable to my mind. Comes with custom lucite base for display.


VLT09-082 - Wulfenite with Mimetite - SOLD
San Francisco Mine, Cucurpe, Sonora, Mexico

miniature, 5.2 x 5 x 4.5 cm
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Wulfenite with Mimetite from San Francisco Mine, Cucurpe, Sonora, Mexico [db_pics/new09mix/wulfenitesanfranciscomine1.jpg]

A stunning, absolutely gemmy cluster of sharp wulfenite windowpanes to 2.7 cm across, dusted with bright mimetite. The wulfenite on this specimen is NOT typical at all of the locale, being an unusual yellow-orange coloration instead of orange as most crystals from here. The 3-dimensionality of the piece is appealing, and its verynearly pristine quality is a miracle, given the fragility of such pieces.This was collected in the late 1960s, by Wayne Thompson. Specimens in this quality, and miniatures on matrix no less, are simply not often available.


VLT09-087 - Mimetite - SOLD
San Pedro Corralitos Mine, Casas Grandes, Chihuahua, Mexico

cabinet, 14.5 x 7 x 6 cm
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Mimetite from San Pedro Corralitos Mine, Casas Grandes, Chihuahua, Mexico [db_pics/new09mix/ed15a.jpg]
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Mimetite from San Pedro Corralitos Mine, Casas Grandes, Chihuahua, Mexico [db_pics/new09mix/ed15b.jpg]
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Mimetite from San Pedro Corralitos Mine, Casas Grandes, Chihuahua, Mexico [db_pics/new09mix/ed15d.jpg]
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Mimetite from San Pedro Corralitos Mine, Casas Grandes, Chihuahua, Mexico [db_pics/new09mix/ed15c.jpg]

Here you have a dramatic, large, 3-dimensional specimen from a very rare and old find - literally a vertical tower of light gossan matrix completely smothered by sparkling balls of botryoidal mimetite. The color is a saturated yellow, nearly the best you can get for the locality and far more desirable than orange-yellow hues. It is brilliantly sparkling in light, and colorful and complete all around 360 degrees. In fact, this is one of the finer large mimetites from this find I have seen survive to this day, 40 years later. It would, to my eye, rank even higher than the well known pieces in the Romero Mexican collection, which I recently handled. The color is a very intense orangey-yellow hue. ALL such mimetites as this were collected in a single large find in end of 1968 and start of 1969 by Benny Fenn (right before the Tucson show of that year!), from a one-time pocket at a small prospect. It was literally a small prospect, not even a developing mine, and it never panned out or produced more specimens again. Despite attempts to find another mimetite pocket, no more ever came out after one release in 1969 , which was sold off at the Tucson show of that year. These remain unique in the world for their overall aspect; and large, colorful pieces like this are treasured by those who have them. Even at the time, this would have been considered exceptional for its size and all-around aesthetics. The color grade on this is very high, making it a choice specimen even among those of us who have seen many over the years.


WULFD-02 - Wulfenite with Mimetite - SOLD
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

small cabinet, 6.6 x 3.5 x 3.2 cm
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-02a.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-02b.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-02c.jpg]

This specimen is not only aesthetic, it also incorporates the best assemblage of species for a Mapimi wulfenite. A rich, gossany, limonite matrix gives way to a superb, botryoidal, translucent , green mimetite crust upon which are perched isolated crystals of lustrous and translucent, pseudocubic, butterscotch-colored wulfenite to .9 cm in length. The presence of a fine quality mimetite on the limonite is not common, and this piece really is rich in it.


WULFD-03 - Wulfenite with Mimetite - SOLD
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

small cabinet, 8.7 x 7.5 x 3.6 cm
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-03a.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-03b.jpg]

Bi-pyramidal, lustrous and translucent, unusually elongate wulfenite crystals, to 2 cm in length have grown in a jackstraw pattern. These crystals are in turn emplaced on a crust of botryoidal, translucent, green mimetite. The matrix is an ocherous, gossany, limonite. Very nice contrast of not only color, but of the form of the sharp angular wulfenite on rounded matrix! No damage except for one crystal near the top left edge (which can be trimmed off in any case)


WULFD-06 - Wulfenite with mimetite (2 pockets on the same specimen) - SOLD
San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico

small cabinet, 7.6 x 6.4 x 6.3 cm
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Wulfenite with mimetite (2 pockets on the same specimen) from San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico [db_pics/pics/wulfd-06a.jpg]
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Wulfenite with mimetite (2 pockets on the same specimen) from San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico [db_pics/pics/wulfd-06b.jpg]
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Wulfenite with mimetite (2 pockets on the same specimen) from San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico [db_pics/pics/wulfd-06c.jpg]
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Wulfenite with mimetite (2 pockets on the same specimen) from San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico [db_pics/pics/wulfd-06d.jpg]

WORDS AND PICS DO NOT CONVEY IT - THESE ARE THE GEMMIEST and MOST LUSTROUS CRYSTALS OF THIS STYLE HERE! A vuggy, ocherous, limonite, matrix is host to two vugs, deep cavities both of which are nearly coated with pseudocubic, lustrous and translucent, butterscotch-colored crystals of wulfenite, to .6 cm in length. Some areas are underlain by lustrous and translucent, botryoids of green mimetite. In person, this is a really interesting piece with lots of ways to look at it. And with the 3-dimensionality, its very impressive in person.


WULFD-07 - Wulfenite with Mimetite - SOLD
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

cabinet, 10.2 x 6.6 x 2.5 cm
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-07a.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-07b.jpg]

A really aesthetic piece where the crystals literally seem to "Pop" out at you due to the overall form of the specimen. An ocherous, limonite matrix is the host for a thin crust of lustrous and translucent, green mimetite and lustrous and translucent, pseudocubic, caramel colored, isolated crystals of wulfenite, to .8 cm (on edge). The placement of the crystals, somethign about it, makes it look as if they curve out at you.


WULFD-10 - Wulfenite with Calcite and Mimetite - SOLD
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

small cabinet, 5.9 x 3.6 x 2.7 cm
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Wulfenite with Calcite and Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-10a.jpg]
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Wulfenite with Calcite and Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-10b.jpg]
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Wulfenite with Calcite and Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-10c.jpg]
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Wulfenite with Calcite and Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico [db_pics/pics/wulfd-10d.jpg]

This aesthetic specimen contains four mineral species. An ocherous, limonite is covered by lustrous, rhombohedral, silky/pearlescent-white crystals of calcite to .3 cm across, which give way to a small area of lustrous and translucent, botryoidal green mimetite. Emplaced on top are several, isolated lustrous and translucent, butterscotch-colored crystals of wulfenite, measuring 1.5 cm in length. Elegant specimen with not only isoaltion of the wulfenites (unusual for the find) but isolation of those same wulfenites on CONTRASTING matrix that look sas if snow fell upon it, to hihglight with color contrast both teh brown matrix and the butterscotch crystals on it. The intergrowth with green mimetite is a bonus. This is simply one of my favorite pieces, period!


WULFD-14 - Wulfenite with Mimetite - $ 1800
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

small cabinet, 9.3 x 5.0 x 3.7 cm
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango,  Mexico [db_pics/pics/wulfd-14a.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango,  Mexico [db_pics/pics/wulfd-14b.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango,  Mexico [db_pics/pics/wulfd-14c.jpg]

Nestled on contrasting limonite is a carpet of olive green mimetite upon which are HUGE bi-pyramidal, lustrous, translucent crystals of butterscotch-colored wulfenite in crystals to 2.0 cm in length. The impact is very strikign in person and these ar emamong the largest crystals I have seen from either recent find. The setting on the carpet of green mimetite, for a 3-color contrast, really makes this piece leap out visually.


WULFD-17 - Wulfenite with Mimetite - $ 1850
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

cabinet, 14.9 x 13.5 x 5.2 cm
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi,  Durango,  Mexico [db_pics/pics/wulfd-17a.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi,  Durango,  Mexico [db_pics/pics/wulfd-17b.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi,  Durango,  Mexico [db_pics/pics/wulfd-17c.jpg]

This LARGE SPECIMEN is one of the biggest plates recovered in good condition! It has dozens of lustrous and translucent, butterscotch-colored wulfenite crystals, to 1.25 cm in length. Some crystals are tapered (elongated "cubic" with blunt tips), a very few are bi-pyramidal, and some are doubly terminated. They are all perched on a thin crust of grayish-green mimetite upon a really well-trimmed, showy matrix plate.


WULFD-21 - Wulfenite with Mimetite - SOLD
San Juan Poniente Shaft,, Ojuela Mine, Mapimi, Durango, Mexico

small cabinet, 8.6 x 3.9 x 1.9 cm
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi,  Durango,  Mexico [db_pics/pics/wulfd-21a.jpg]
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Wulfenite with Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi,  Durango,  Mexico [db_pics/pics/wulfd-21b.jpg]

The pleasing , dark green color of the botryoidal mimetite contrasts nicely with the pseudocubic, lustrous and translucent, butterscotch-colored colored wulfenite crystals, to .75 cm across. All of this is on a sculptural and 3-dimensional limonite matrix. There is some minimal damage to a few wulfenite crystals or this would be twice the price, but it is still visually quite a nice specimen and worth this just for the mimetite, I think.


WULFD-26 - Wulfenite on Mimetite - $ 750
San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico

small cabinet, 9.6 x 5.7 x 4.2 cm
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Wulfenite on Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico [db_pics/pics/wulfd-26a.jpg]
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Wulfenite on Mimetite from San Juan Poniente Shaft,, Ojuela Mine, Mapimi Durango Mexico [db_pics/pics/wulfd-26b.jpg]

Sharp and graceful, bipyramidal crystals of butterscotch-colored wulfenite sit on a carpet of beautiful deep green mimetite here. The crystals are lustrous and translucent and reach 1.7 cm in length. They are extremely well formed and elongated, without the robust base of most larger bipyramidal crystals seen here. I particularly like the stark isolation of the crystals, but teh orange-on-green color contrast really draws the eye as well or more than the crystallography itself.


WW22 - Mimetite (1971 Gem Pocket) - SOLD
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia

thumbnail, 2.7 x 2.4 x 1.9 cm
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ex.  Wendell E. Wilson

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Mimetite (1971 Gem Pocket) from Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia [db_pics/pics/ww22a.jpg]
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Mimetite (1971 Gem Pocket) from Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia [db_pics/pics/ww22b.jpg]
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Mimetite (1971 Gem Pocket) from Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia [db_pics/pics/ww22c.jpg]
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Mimetite (1971 Gem Pocket) from Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia [db_pics/pics/ww22d.jpg]

from the 1971 Gem Pocket! A fine specimen from one of Tsumeb’s most famous finds. The Mimetites are a beautiful gemmy yellow, showing the long prismatic habit that is so attractive. The two longest crystals are about 1.2 cm long! The shortest crystal is broken, others pristine and intact and glowing like little jewels! This is an excellent matrix thumbnail specimen from an important discovery.



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Rob Lavinsky, rob@irocks.com

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