Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Treasure Falls, Wolf Creek Pass, San Juan Mts, Mineral Co., Colorado, United States
- Formula
- CaCO3
- Size
- SmCabinet 5.5x4x3cm
- Tagged
- carbonate
Treasure Falls has more to offer besides Calcite. But this Calcite I thought was fun since it is double refrectory as seen by the doubled Hampson name.
- Availability
- Sold
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- SmCabinet 8.5x6x5cm
- Tagged
- carbonate
A showy specimen of brassy, mammilary Pyrite with numerous crystals of white Calcsite to 2cm. Sits well, displays well.
- Availability
- Sold
- Locality
- Treasury Tunnel, Ouray Co., Colorado, United States
- Formula
- CaCO3
- Size
- Cabinet 13x15x5cm
- Tagged
- carbonate
Large cabinet group of dog-tooth Calcite crystals to 2cm.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- Cabinet 12x9x4cm
- Tagged
- carbonate
Scalenohedral Calcite crystals to 3cm with a second generation of more complex Calcite wrapping around the first generation. The first generation often has a thin veneer of iron-oxide coating and also shows some phantoms, while the second generation has a bright orange layer. Super specimen, a classic locality for Mexico brought out in the early 1970's and virtually unobtainable these days.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- Cabinet 15x8x3cm
- Tagged
- carbonate
An eye pleasing specimen of rhombic Calcite with selective corners coated by iron oxide. The largest crystal is 3cm.
- Availability
- Sold
- Locality
- America mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- Cabinet 17.5x16x6cm
- Tagged
- carbonate
- Special Info
- Fluorescent
This is a large cabinet specimen purchased by Arnold Hampson in 1972 in Santa Eulalia. There are two very distinct generations of Calcite, which are called "Mariposa" (butterfly) habit. The first generation are scalenohedral crystals measuring 3 to 4cm and are covered by glitterly iron-oxides and/or Siderite. The second generation overgrows the first and are simple yellow rhombic Calcite. The first generation is highly fluorescent red, but is hard to through the oxide coatings. However, flipping the specimen over you will see the intense red patterns of growth under shortwave UV.
It is a beautiful specimen in which the photos do not give justice. The special edition on Santa Eulalia in the Mineralogical Record describes these Calcite crystals and the Mariposa habit including a few photos. On the outer edge are two broken off crystals, which do not detract from the overall appearance. In order to extract these from the wall, it was inevitable.
