Fine Mineral Specimens Over $50
- Availability
- Sold
- Locality
- America mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- 16 x 13.5 x 6 cm - Cabinet
- Tagged
- carbonate
"Mariposa" habit Calcite crystals to 3cm. The Mariposa habit is formed by two generations of Calcite. The first is easily seen since it is coated with a thin veneer of brown iron oxide. The first generation are scalenohedral crystals, and the second is an overgrowth which totally wraps around the first giving an appearance that of a snow-capped mounain range. The very tips of the crystals are sharp as a pin. The Mineralogical Record issue of "Santa Eulalia" describes these clusters. The specimen is in excellent condition and any serious collector of fine Mexican minerals should have one of these in their collection.
- Availability
- Available
- Price
- $75.00
- Locality
- Esquire #7 claim, Big Creek, Fresno Co., California, United States
- Formula
- Ba4Fe43+O3(OH)3(Si4O12)[Si2O3(OH)4]Cl
- Size
- 2 x 1.5 x 1 cm - Thumbnail
Dark blue massive Cerchiaraite-(Fe). The Esquire #7 deposit share type localities with two other localities.
- Availability
- Sold
- Locality
- Bambollita mine, Moctezuma, Sonora, Mexico
- Formula
- Cu5(Te4+O3)2(OH)6ยท2H2O
- Size
- 4 x 3 x 3 cm - Miniature
- Tagged
- copper, tellurium
- Special Info
- Type Locality
Green radial pod-like crystal groups to 1mm across. Rich, excellent specimen and very rare only found at three localities worldwide.
- Availability
- Sold
- Locality
- Butte dist., Silver Bow Co., Montana, United States
- Formula
- Cu2S
- Size
- 10 x 8 x 4.5 cm - Cabinet
- Tagged
- sulfide, copper, ore specimen
- Special Info
- Antique Specimen
Black, sooty mass of ore from Bisbee! I really wanted to break in half just to get that fresh look.
- Availability
- Sold
- Locality
- Junction shaft, Bisbee, Cochise Co., Arizona, United States
- Formula
- Cu1+Fe3+S2
- Size
- 8 x 4.5 x 4 cm - Sm Cabinet
- Tagged
- ore mineral, sulfide, copper
- Special Info
- Antique Specimen
A chunk of ore from this world classic copper deposit. It is sawed on two sides presumably for analytical information. The high relectivity of the Chalcopyrite and be seen in the photos. The rest of the matrix is Bornite. The old tag seen in the prov. tab has seen bettr days.
- Availability
- Available
- Price
- $60.00
- Locality
- Shkatulka peg., Umbozero mine, Alluaiv Mt., Lovozero, Kola Peninsula, Russia
- Formula
- Na2BeSi2O6
- Size
- 2 x 2 x 1.2 cm - Thumbnail
- Tagged
- beryllium
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
White, translucent crystalline specimen. Chkalovite is a rare beryllium silicate described in 1939, found Quebec, Greenland and Russia. This specimen is composed of nearly all white to clear Chkalovite. It was identified by Dr. Igor Pekov.
