Mineral Specimens with Calcite

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MD-121941 - Sphalerite, Calcite - - Archived
Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria
small cabinet, 7.6 x 6.8 x 4.4 cm.

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Sphalerite, Calcite from Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria [db_pics/mdpics/MD-121941a.jpg]

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Sphalerite, Calcite from Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria [db_pics/mdpics/MD-121941b.jpg]

7.6 x 6.8 x 4.4 cm. Tan-colored crystals of calcite with hematite staining, on a specimen of solid sphalerite that is crystallized on top with tiered, complex faces.

MD-121943 - Calcite (Var: Cobaltoan Calcite) - - Archived
Bou Azzer, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
small cabinet, 8.3 x 5.2 x 5.1 cm.

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Calcite (Var: Cobaltoan Calcite) from Bou Azzer, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco [db_pics/mdpics/MD-121943a.jpg]

Calcite (Var: Cobaltoan Calcite) from Bou Azzer, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco [db_pics/mdpics/MD-121943a.jpg]

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Calcite (Var: Cobaltoan Calcite) from Bou Azzer, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco [db_pics/mdpics/MD-121943b.jpg]

8.3 x 5.2 x 5.1 cm. A pocket of BIG, BRIGHT pink crystals of cobaltoan calcite, one of the most prized calcite varieties for its rarity in good crystals - particularly in crystals over half a centimeter, which these are.

MD-121952 - Calcite - - Archived
Rucks Pit, Fort Drum, Okeechobee Co., Florida, USA
small cabinet, 5.1 x 3.2 x 3.2 cm.

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Calcite from Rucks Pit, Fort Drum, Okeechobee Co., Florida, USA [db_pics/mdpics/MD-121952a.jpg]

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Calcite from Rucks Pit, Fort Drum, Okeechobee Co., Florida, USA [db_pics/mdpics/MD-121952b.jpg]

5.1 x 3.2 x 3.2 cm. This beautiful specimen formed when gemmy calcite crystals formed inside the natural pocket of a buried fossil clam shell. These sharp, golden crystals have superb quality. These represent some of the very few collector-quality specimens that come from Florida!

MD-121970 - Calcite - - Archived
Black Forest, Baden-Württemberg, Germany
cabinet, 10.4 x 6.1 x 2.6 cm.

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Calcite from Black Forest, Baden-Württemberg, Germany [db_pics/mdpics/MD-121970a.jpg]

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Calcite from Black Forest, Baden-Württemberg, Germany [db_pics/mdpics/MD-121970b.jpg]

10.4 x 6.1 x 2.6 cm. From the collection of Sal Auella, a rare specimen of light violet-colored calcite from the Black Forest of Germany. The crystals have been naturally etched into strange shapes, with frosty faces.

MD-122270 - Hematite, Calcite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
miniature, 4.1 x 3.7 x 3.2 cm

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Hematite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122270a.jpg]

Hematite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122270a.jpg]

Two mirror-lustrous, 3-dimensional, just brilliantly jewel-like metalli chematite crystals sits on matrix accented by sparkling white calcite. Exceptional quality miniature! The crystals are undamaged except the very bottom base of the lower one , pointing down; and a tiny slight ding on the back of the upper crystal. The crystals are 2 cm tall. 4.1 x 3.7 x 3.2 cm

This Photo was Mindat.org Photo of the Day - 23rd Oct 2007

MD-122272 - Calcite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 5.6 x 5.4 x 3.8 cm

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Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122272a.jpg]

Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122272a.jpg]

This crystal is SHARP and so oddlooking I thought it was a barite at first. But it is a calcite, showing fascinating growth patterns. Cleaved only on the back, otherwise complete all around. 5.6 x 5.4 x 3.8 cm

This Photo was Mindat.org Photo of the Day - 6th Apr 2008

MD-122286 - Inesite, Calcite, Orlymanite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 6.2 x 5.8 x 4.0 cm

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Inesite, Calcite, Orlymanite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122286a.jpg]

Inesite, Calcite, Orlymanite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122286a.jpg]

Deep red inesites to 1 cm, form rich aggregates over an orlymanite-coated matrix here. Small calcites pop out, as well. This is a very rich specimen from a small, rare pocket of unusually deeply-colored inesite. 6.2 x 5.8 x 4.0 cm

MD-122290 - Calcite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
thumbnail, 2.5 cm

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Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122290a.jpg]

Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122290a.jpg]

Wow! this is a stunning, gemmy miniature featuring two prisitne, perfectly upright gem calcite crystals twinned with respect to one another. The crystals measure 2.2 and 2.5 cm across at their longest dimensions and are just like little jewels! 3.8 x 3.3 x 2.2 cm

MD-122291 - Calcite, Brucite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 6.4 x 3.3 x 3.2 cm

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Calcite, Brucite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122291a.jpg]

Calcite, Brucite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122291a.jpg]

WOW! This is one of my favorite pieces in the whole update, for the sheer crazy geometry of it and the unique combination. First of all, the blue brucite is good on its own merit. Turn the piece upside down and you have a good brucite on matrix...and lustrous blue is very rare, in any case, for the species. I think its worth this price JUST FOR the brucite, in other words. The color contrasts to the calcite, obviously. However, the stark physical contrast of the gemmy, geometric, sharp calcite rhomb atop is just even more striking, and as a Wessels calcite specimen, it is an unusual and dramatic piece. The calcite rhomb is nearly complete up on its pedestal, with just a small contacted lower area in back and a few trivial dings. It is gemmy, and complete, otherwise all around including the sides. 6.4 x 3.3 x 3.2 cm

MD-122292 - Calcite, Brucite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
miniature, 3.5 x 2.9 x 1.9 cm

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Calcite, Brucite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122292a.jpg]

Another piece from obviously the same pocket as the above, this is to me one of the most unprecedented specimens in the collection for the aesthetics and the oddity of the combo. The calcite is almost an inch across, sharp, and very translucent. It has a contact on the left edge of the rhomb, that is detracting a bit, but the price is adjusted accordingly. The brucite is waxy-lustrous, and superb on its own merits. Again, I think the contrast between the sharp rhomb and the curvy brucite really adds visual impact and get this piece noticed! 3.5 x 2.9 x 1.9 cm

MD-122293 - Poldervaartite, Calcite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 6.1 x 4.1 x 2.5 cm

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Poldervaartite, Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122293a.jpg]

Poldervaartite, Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122293a.jpg]

A really unusual specimen with both the red crystal and the beige spherical aggregate styles both on the same specimen in close contact, all accented by a few sparkly calcite crystals. Really wild combination! The lump you see in the center of the polder ball is a calcite crystal , and then next to it a slight gap int eh crystal coverage of the sphere. In person, that little dimple isn't as obvious because you tilt the specimen back for display instead of straight up as shown. Overall, though, this is a VERY cute combination piece and the juxtaposition of crystal forms of the same mineral on one piece is interesting. 6.1 x 4.1 x 2.5 cm

MD-122294 - Calcite (Var: Manganoan Calcite), Kutnohorite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 7.1 x 7.1 x 3.4 cm

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Calcite (Var: Manganoan Calcite), Kutnohorite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122294a.jpg]

Calcite (Var: Manganoan Calcite), Kutnohorite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122294a.jpg]

A beautiful specimen with DEEP PINK manganoan calcite in 3-dimensional rounded globules and odd extended tubes, perched atop a curving mass of paler-pink, less lustrous and so contrasting, kutnahorite. This is a palm-sized piece with rich color and dimensionality to it that makes a stunning visual impac tin a case. 7.1 x 7.1 x 3.4 cm

MD-122299 - Calcite (Var: Manganoan Calcite) - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
large cabinet, 16.3 x 12.3 x 5.1 cm

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Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122299a.jpg]

Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122299a.jpg]

A Beautiful, crescent-shaped specimen of RICH PINK manganoan calcite, complete all around the sides and contacted only on the bottom (or back, as shown here stood vertically). This is a stunning, colorful piece with no damage on all that surface volume. 16.3 x 12.3 x 5.1 cm

MD-122377 - Calcite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
cabinet, 11.6 x 10.1 x 8.4 cm

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Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122377a.jpg]

Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122377a.jpg]

A cluster of GEMMY, transparent calcite rhombohedra to 5 cm, just brilliantly lustrous and clear. Note how some are sharp rhombs and some show modifications on the long faces, extra bevels you can see in the closeup photo - lower right. These crystals rival calcite from anywhere, and large specimens like this are uncommon from the Wessels Mine. All the major crystals here are in good shape except for a slight contact to the bottom of the bottom-most. In person, it is a much brighter and sparklier specimen, as well. 11.6 x 10.1 x 8.4 cm

MD-122378 - Hausmannite, Calcite - - Archived
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 6.6 x 5.0 x 3.5 cm

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Hausmannite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122378a.jpg]

Hausmannite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-122378a.jpg]

This specimen is nice because you seldom see a large hausmannite perched in isolation, on any matrix! Here we hafve a 4 cm hausmannite crystal perched upon a mound of lustrous, sparkling calcite. There is also minor sturmanite and garnet attached. The hausmannite is complete 360 degrees and has excellent form, good lustre, and classic jet black color. The 4 cm-tall hausmannite is actually, now that i look more closely, a compound crystal with one sharp octohedron perched upon a larger one, making for a continuous cluster. It is very aesthetic ! 6.6 x 5.0 x 3.5 cm

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Rob Lavinsky, rob@irocks.com

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