Mineral Specimens with Calcite

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K239 - Orange Prehnite on Calcite - SOLD
NChwaning II Mine, Kalahari Manganese Fields, South Africa
miniature, 5.1 x 3.7 x 2.0 cm

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Orange Prehnite on Calcite from NChwaning II Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k239a.jpg]

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Orange Prehnite on Calcite from NChwaning II Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k239b.jpg]

Another extremely unusual piece from this pocket, which Charlie got much of back when it was found. This specimen features brilliant, fiery orange , sparkling prehnites atop a gemmy calcite rhombohedron! It is EXQUISITE and beautiful!

K251 - Inesite with Calcite on Orlymanite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
small cabinet, 6.2 x 5.8 x 4.0 cm

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Inesite with Calcite on Orlymanite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k251a.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.

K255 - Calcite (twinned) - SOLD
NChwaning Mine, Kalahari Manganese Fields, South Africa
miniature, 3.8 x 3.3 x 2.2 cm

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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!

K256 - Calcite on Brucite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
miniature, 6.4 x 3.3 x 3.2 cm

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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.

K257 - Poldervaartite with Calcite - SOLD
NChwaning Mine, Kalahari Manganese Fields, South Africa
small cabinet, 6.1 x 4.1 x 2.5 cm

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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.

K258 - Manganocalcite on Kutnahorite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
small cabinet, 7.1 x 7.1 x 3.4 cm

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Manganocalcite on Kutnahorite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k258a.jpg]

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Manganocalcite on Kutnahorite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k258b.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.

K262 - Manganocalcite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
cabinet, 16.3 x 12.3 x 5.1 cm

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Manganocalcite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k262a.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.

K270 - Calcite - $ 850
Wessels Mine, Kalahari Manganese Fields, South Africa
cabinet, 11.6 x 10.1 x 8.4 cm

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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.

K273 - Hausmannite on Calcite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
small cabinet, 6.6 x 5.0 x 3.5 cm

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Hausmannite on Calcite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k273a.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 !

K282 - Poldervaartite on Calcite - SOLD
NChwaning Mine, Kalahari Manganese Fields, South Africa
cabinet, 15.0 x 11.7 x 3.0 cm

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A large plate with waxy-lustrous, beige polder crystals richly covering an undeerlaying matrix of bright and sparkly calcite! It is hard to get such nice large plates in good condition! This was found 5-6 years ago and I can say that large plates of the calcite intermix are particularly hard to come by, as they were snapped up for the beauty of the contrast. The poldervaartite in this style and association is not red like the styles shown above, but the calcite association makes up for it and gives quite a different look to the specimens in terms of visual appeal.

K285 - Kutnahorite with Manganocalcite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
small cabinet, 6.6 x 4.4 x 2.6 cm

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A beautiful, truly sculptural specimen with finely filigreed crystals of kutnahorite in curving rows and layers twisting upon each other. Extremely dramatic example of this style, as I think the pics convey! Usually this style is labelled simply as kutnahorite, but there is probably some manganocalcite mixed in as well (its a series) in the underlaying , less crystallized platelike layers upon which the finely filigreed crystals rest.

K287 - Kutnahorite with Manganocalcite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
small cabinet, 7.2 x 5.3 x 4.5 cm

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K291 - Calcite on Brucite - SOLD
Wessels Mine, Kalahari Manganese Fields, South Africa
miniature, 3.5 x 2.9 x 1.9 cm

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Calcite on Brucite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k291a.jpg]

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Calcite on Brucite from Wessels Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k291b.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!

KCPR-30 - Orange Prehnite with Calcite - SOLD
NChwaning II Mine, Kalahari Manganese Fields, South Africa
miniature, 3.7 x 2.8 x 2.1 cm

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iNCREDIBLE QUALITY, gemmy , ELONGATE CRYSTALS...SMALL CLUSTER HERE, BUT JUST SUPERB QUALITY AND OUTSTANDING FOR THE REFERENCE OR SPECIES COLLECTOR WHO WANTS QUALITY BUT NOT A BIG OR EXPENSIVE SPECIMEN. The cluster wraps around the top of the xonotlite matrix.

KCPR-33 - Orange Prehnite on Calcite - SOLD
NChwaning II Mine, Kalahari Manganese Fields, South Africa
miniature, 5.4 x 3.2 x 2.7 cm

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A superb tree-shaped, 3-dimensional specimen with GEMMY , lustrous crystals of prehnite to 7mm. The sparkle emanating from the cluster of crystals is beautiful, as is the pure orange color. I could not decide which i like better from this or the last one. The previous piece has more color impact, but this has better aesthetics. They both have the best quality gemmy, lustrous, elongated crystals that were found.

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Rob Lavinsky, rob@irocks.com

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