Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Pribram, Bohemia, Czech Republic
- Formula
- CaCO3
- Size
- SmCabinet 4x6x2cm
- Tagged
- carbonate
- Special Info
- Fluorescent
Wow - this may be the most facinating specimen we have ever sold. As you can see it is a delicate network of Aragonite crystals to 1cm. In fact, the entire specimen may indeed be Calcite. Looking closely at this specimen, the terminations on each side are profoundly different. The base crystals are clearly rhombic with one blunt, equant crystal forming the termination. The opposite, pointed end, that looks like the Denver airport, are composed of thin, discoidal crystals stacked in a fashion that produced a sharp single column which apparently grew out of several converging columns. It's one weird crystal formation, which I haven't a clue as to how it formed. It seems to be a floater as there are no attachment points so possibly it formed in a clay. It will require insurance and careful packing which we are capable of.
- Availability
- Sold
- Locality
- Minglanilla, Castile-La Mancha, Spain
- Formula
- CaCO3
- Size
- SmCabinet 4x5.5x5cm
Large purple to colorless, hexagonal Aragonite crystal with other Aragonite crystals sticking out of each end. Neat piece!
- Availability
- Sold
- Locality
- Arizona, United States
- Formula
- CaCO3
- Size
- Cabinet 6x15x7.5cm
- Tagged
- carbonate
Pure opaque-white crystalline Aragonite forming a cloud-like crystals in a stalagtitic growth. In cross section there are rings of growth, each ring representing the unique conditions present when the carbonate was deposited.
During Tom's recent trip to Michigan he visited the A.E. Seaman mineral museum and there was a similar Bisbee Aragonite on display there. See old Dick Bideaux label.
- Availability
- Sold
- Locality
- Gold Hill mine, Tooele Co., Utah, United States
- Formula
- CaCO3
- Size
- SmCabinet 3.5x5.5x2cm
- Tagged
- carbonate
- Special Info
- Fluorescent
Perfectly colorless and sharp Aragonite crystals to >1cm 3.5totally covering one side of matrix. This is a nice little piece that also fluoresces highlighter-yellow in shortwave UV light.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- CaCO3
- Size
- SmCabinet 5.5x4x2.5cm
- Tagged
- carbonate
A miniature size specimen of "nicholsinite", the zinc-bearing variety of Aragonite with characteristic pseudohexagonal dipyramidal crystals with short prism faces and pinacoids. The crystals average 7-8mm and the largest is 1cm. The matrix looks to be a combination of Calcite and Siderite or Dolomite.
- Availability
- Sold
- Locality
- Molina de Aragón, Guadalajara, Castile-La Mancha, Spain
- Formula
- CaCO3
- Size
- Cabinet 10.5x6x5cm
- Tagged
- carbonate
Cabinet specimen with colorless hexagonal, twinned crystals to 1.5cm. Back label on flat sawed side states that it was from the Calvert Collection.
