Marin Mineral
Congo Minerals
August 9, 2023  ·  25 specimens

Mixed minerals from the Congo (both the Republic of the Congo and the Democratic Republic of the Congo).  

AU868 - Tourmaline  sold

Rubaya, North Kivu, Dem. Rep. of Congo
Miniature - 3.5 x 2 x 1.8 cm



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Tourmaline Tourmaline Tourmaline Tourmaline

Glassy transparent Tourmaline crystal from recent finds in the Congo. The color from the side appears as green over pink, but there is also a yellow color at the termination that makes this one really interesting and uncommon. The shape of the termination is also fantastic. Note that this one is directly from a miner and has not been to a cleaning lab and could likely be improved. Undamaged and weighs 20.84 grams.


AF642 - Malachite   $300  available

Shaba Prov., Congo
Small Cabinet - 7 x 7 x 5 cm



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Malachite Malachite

Botryoidal Malachite on matrix. Very attractive and atypical to have the malachite well centered on matrix such as this one, 7 x 7 x 5 cm.


AU726 - Hemimorphite  sold

Mfouati, Bouenza Department, Republic of the Congo
Small Cabinet - 6.8 x 4.5 x 2.5 cm



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Hemimorphite Hemimorphite Hemimorphite Hemimorphite

Sparkling sky blue Hemimorphite from Mfouati. A thick mound-shaped layer of beautiful translucent Hemimorphite to 1.5cm thick. The top surface sparkles and I love the stalactitic growths. Beautiful color!


AF691 - Carrollite  sold

Kamoya Mine, Shaba Prov., Congo
Miniature - 5 x 4.5 x 3.5 cm



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Carrollite Carrollite

A pair of highly lustrous Carrollite crystals attached to the face of a Calcite rhomb. Largest crystal is 1.1cm.


ST238 - Kolwezite after Cuprite on Cobaltian Calcite   $900  available

Kolwezi Mining District, Lualaba, DR Congo
Cabinet - 14.5 x 9 x 3 cm



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Kolwezite after Cuprite on Cobaltian Calcite Kolwezite after Cuprite on Cobaltian Calcite Kolwezite after Cuprite on Cobaltian Calcite Kolwezite after Cuprite on Cobaltian Calcite Kolwezite after Cuprite on Cobaltian Calcite

Dark olive green Kolwezite pseudomorphs after Cuprite atop rhombs of pink Cobaltoan Calcite (or possibly Cobaltoan Dolomite) creating a stunning mixture of colors and forms. There are a few clusters of an earlier generation of botryoidal Kolwezite but the majority are angular crystals of the pseudomorphs. Kolwezite is a Copper Cobalt Carbonate Hydroxide and this is the type locality for the species. A beautiful large display piece and combination specimen of two desireable species together.


AU727 - Cerussite on Hemimorphite  sold

Mfouati, Bouenza Department, Republic of the Congo
Small Cabinet - 6 x 5 x 3.5 cm



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Cerussite on Hemimorphite Cerussite on Hemimorphite Cerussite on Hemimorphite Cerussite on Hemimorphite

Vug filled with botryoidal blue Hemimorphite with attached crystals of Cerussite. The Hemimorphite is a beautiful translucent blue color!


AF529 - Carrollite   $250  available

Kamoya South Mine, Kambove, Katanga, Congo
Small Cabinet - 6.5 x 5 x 4 cm



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Carrollite Carrollite

Cluster of 5 mirror lustrous Carrollite crystals, and one Chalcopyrite crystal, in a cluster on white Calcite. Largest crystal is 1.1 cm wide.


MK589 - Cobaltian Calcite  sold

Mashamba West Mine, Katanga, Congo
Miniature - 4.5 x 2.5 x 2.2 cm



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Cobaltian Calcite Cobaltian Calcite Cobaltian Calcite Cobaltian Calcite

Crystals of vivid pink Cobaltian Calcite crystals from the famous Mashamba West Mine. Exceptional color and large rhombic crystals to 2cm wide.


AU728 - Hemimorphite  sold

Palabanda quarries, Mfouati, Bouenza Department, Republic of the Congo
Small Cabinet - 8 x 6 x 4 cm



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Hemimorphite Hemimorphite Hemimorphite

Sparkling sky blue Hemimorphite on matrix. The top surface sparkles and the color is just gorgeous.


AU750 - Smithsonite, Aurichalcite  sold

Yanga Koubenza, Mfouati, Bouenza Department, Republic of the Congo
Small Cabinet - 6 x 3.8 x 1.7 cm



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Smithsonite, Aurichalcite Smithsonite, Aurichalcite Smithsonite, Aurichalcite Smithsonite, Aurichalcite

Sparkling blue/green Smithsonite and layers of Aurichalcite on matrix. The top surface sparkles and the color is just gorgeous.


MK641 - Cobaltian Calcite with Kolwezite  sold

Mupine Mine, Kolwezi Miniing Dist., Lualaba, DR Congo
Small Cabinet - 6.8 x 3 x 3 cm



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Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite

Exceedingly large single pink Cobaltian Calcite crystal from the Congo. This is a complete scalenohedral crystal that is partially doubly terminated along the bottom. Translucent and undamaged with green Kolwezite adding color contrast. This is the largest single Cobaltian Calcite I've ever seen from the locality. Last photo is backlit.


LP864 - Tourmaline  sold

Rubaya, North Kivu, Dem. Rep. of Congo
Small Cabinet - 8.1 x 2.2 x 1.7 cm



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Tourmaline Tourmaline Tourmaline Tourmaline

Glassy pink and green Tourmaline crystal from recent finds in the Congo. The Tourmaline is a glassy pink with a bright green termination. Good transparency and in excellent condition, even the base has been rehealed. This is a crystal from early production at the locality that I obtained in a trade. It weighs 52.04 grams. Good, larger sized Congo Tourmaline typically sells for about $300/gram, but because it is an older piece obtained in a trade I'm able to sell it here at about $150/gram.


AU429 - Diamond   $400  available

Miba Mine, Mbuji Mayi, DR Congo
Thumbnail - 0.8 x 0.7 x 0.6 cm



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Diamond Diamond Diamond

Single translucent Diamond crystal from the Congo. The Diamond is a cube that in somewhat flattened in one direction, forming a parallelogram shape. Complete all around and undamaged. Weighs 3.41 carats.


CT511 - Cobaltian Calcite with Kolwezite  sold

Katanga, Congo (DRC)
Miniature - 4.8 x 4.5 x 2 cm



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Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite Cobaltian Calcite with Kolwezite

Scalenohedral pink Cobaltian Calcite crystals covering the front face associated with rounded masses of Kolwezite. Ex. Cliff Krueger, Chuck Trantham collections.


C677 - Cuprite on Chrysocolla  sold

Mashamba West Mine, Katanga, Congo
Small Cabinet - 8 x 6.5 x 4 cm



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Cuprite on Chrysocolla Cuprite on Chrysocolla Cuprite on Chrysocolla

Cuprite crystals to 1.9cm on a flat Chrysocolla covered matrix. These came out years ago and are among my favorite Cuprite specimens as the Chrysocolla really sets off the Cuprite crystals. Main crystal is sharp with just slight edge chipping in one area. There are also many more crystals present (can be seen along edges) that are completely covered by the Chrysocolla and could be exposed. Areas of fibrous Malachite crystals enhance the look.


AU732 - Hemimorphite   $150  available

Mfouati, Bouenza Department, Republic of the Congo
Small Cabinet - 7 x 6 x 3 cm



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Hemimorphite Hemimorphite Hemimorphite

Sparkling sky blue Hemimorphite from Mfouati. Beautiful translucent Hemimorphite on matrix. The top surface sparkles and it has a good overall shape.


AU751 - Smithsonite  sold

Yanga Koubenza, Mfouati, Bouenza Department, Republic of the Congo
Miniature - 4.5 x 3.7 x 2 cm



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Smithsonite Smithsonite Smithsonite

Sparkling blue/green Smithsonite and layers of Aurichalcite on matrix. The top surface sparkles and the color is just gorgeous.


CT465 - Cobaltian Calcite   $350  available

Mashamba West Mine, Katanga, Congo
Small Cabinet - 6.5 x 5 x 2.5 cm



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Cobaltian Calcite Cobaltian Calcite Cobaltian Calcite

Well saturated purple pink crystals of Cobaltian Calcitewith crystals to 1cm in size. Undamaged and sawcut on back. Old material from the Chuck Trantham collection.


ST205 - Cobaltian Calcite  sold

Kolwezi Mining District, Lualaba, DR Congo
Cabinet - 11 x 6 x 3.5 cm



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Cobaltian Calcite Cobaltian Calcite Cobaltian Calcite Cobaltian Calcite

Crystals of vivid pink Cobaltoan Calcite on matrix. The specimen has a mixture of smaller, lighter pink crystals and larger rhombic crystals to 6mm with a deeper pink coloration. Large and colorful Congo classic.


AU577 - Veszelyite on Plancheite   $1,600  available

Kipushi Mine, Kipushi, Katanga, DR Congo
Miniature - 4 x 3.5 x 3 cm



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Veszelyite on Plancheite Veszelyite on Plancheite Veszelyite on Plancheite Veszelyite on Plancheite

Sharp, isolated crystals of translucent Veszelyite spinkled across the surface of velvety sky blue Plancheite. This is an old specimen, likely from the 80s or 90s, that I've owned for about 25 years. The Velzelyite form sharp, distinct individual crystals to 3mm in size. There is an old collection number painted on the bottom that was there when I bought it.


ST206 - Kolwezite, Malachite on Cobaltian Calcite  sold

Kolwezi Mining District, Lualaba, DR Congo
Large Cabinet - 15.5 x 14 x 5 cm



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Kolwezite, Malachite on Cobaltian Calcite Kolwezite, Malachite on Cobaltian Calcite Kolwezite, Malachite on Cobaltian Calcite Kolwezite, Malachite on Cobaltian Calcite Kolwezite, Malachite on Cobaltian Calcite

Dark olive green botryoidal Kolwezite atop rhombs of vivid pink Cobaltoan Calcite (or possibly Cobaltoan Dolomite) creating a stunning mixture of colors and forms. The Kolwezite is partially coated by bright green Malachite in areas. Kolwezite is a Copper Cobalt Carbonate Hydroxide and this is the type locality for the species. Highly colorful and beautiful large display piece.


AU734 - Hemimorphite  sold

Palabanda quarries, Mfouati, Bouenza Department, Republic of the Congo
Miniature - 5 x 4.5 x 4 cm



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Hemimorphite Hemimorphite Hemimorphite Hemimorphite

Sparkling deep blue Hemimorphite on matrix. The top surface sparkles and there is good Hemimorphite on both sides.


AU753 - Dioptase  sold

Reneville, Pool Department, Republic of the Congo
Miniature - 4.5 x 4 x 1.5 cm



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Dioptase Dioptase Dioptase Dioptase

Cluster of solid Dioptase crystals without matrix. Good crystals all over, front and back, top to bottom.


AU737 - Cerussite on Hemimorphite  sold

Mfouati, Bouenza Department, Republic of the Congo
Miniature - 5 x 4.3 x 2 cm



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Cerussite on Hemimorphite Cerussite on Hemimorphite Cerussite on Hemimorphite

Botryoidal blue Hemimorphite with attached crystals of Cerussite and Malachite. Colorful specimen!


ST194 - Malachite on Cobaltian Calcite  sold

Kolwezi Mining District, Lualaba, DR Congo
Small Cabinet - 9 x 7.5 x 4 cm



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Malachite on Cobaltian Calcite Malachite on Cobaltian Calcite Malachite on Cobaltian Calcite Malachite on Cobaltian Calcite Malachite on Cobaltian Calcite Malachite on Cobaltian Calcite

Bladed crystal groups of green Malachite atop bright pink Cobaltoan Calcite. There are smaller deep emerald green crystal groups atop the bladed Malachite.


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