Rare Mineral Specimens - search page
- Availability
- Sold
- Locality
- Topaz Mountain, Thomas Range, Juab Co., Utah, United States
- Formula
- Be3Al2Si6O18
- Size
- 5 x 3 x 3 cm - Miniature
- Tagged
- beryllium
Nice combo specimen with a well-formed hexagonal crystal of red Beryl to 3mm across with a 9mm colorless Topaz crystal.
- Availability
- Sold
- Locality
- Harding mine, Taos Co., New Mexico, United States
- Formula
- CaLiAl2(Si2BeAl)O10(OH)2
- Size
- 4 x 3 x 1.5 cm - Miniature
- Tagged
- beryllium, pegmatite mineral
Bityite is a brittle mica since calcium cations assume the position in the interlayer instead of potassium. Beryllium replaces some of the silicon cations in the Tetrahedral positions and lithium takes on the positions in the Octahedral positions between the layers. One of a handful of lithium micas and the only one with essential beryllium.
Usually occurs as thin tabular and pseudohexagonal crystals to 2mm or as rosettes of dense or compact aggregates. Found sparingly in lithium rich pegmatites. (Encycl. of Min.). Weak yellow Fl.
This is a nice specimen with countless small 1-2mm white platy crystals on Biotite matrix. The Bityite exhibits weak yellow FL.
- Availability
- Available
- Price
- $1,550.00
- Reduced Price
- $1,125.00
- Locality
- Amelia mine, Boleo, Santa Rosalia, Baja California, Mexico
- Formula
- KAg9Pb26Cu24Cl62(OH)48
- Size
- 3.5 x 3.5 x 2 cm - Miniature
- Tagged
- melange, copper
This is one of the bigger Boleite crystals you will ever see. IT is a whopping 1cm on edge with a number of smaller crystals. They don't get much bigger than this according to the Mineraolgical Record: Special Issue #1 (Mexico) January-February 1998 Volume 29 Number 1, page 38 under the description of Boleite the author states that "Cubic crystals of millimetric size (up to 5 mm) have been found in abundance, while those approaching a centimeter are very rare. Crystals of larger size (the record being 2.5 cm) are highly exceptional.....
Though the one corner has a small ding the price has been adjusted accordingly. Large crystals of Boleite like this are seldom seen on the market and one little ding should not distract from its overall beauty. Must be insured and extra shipping will apply. Ex Carter Rich (see Prov. tab).
- Availability
- Sold
- Locality
- Rossing mine, Rossing, Swakopmund, Namibia
- Formula
- KUO2(SiO3OH)·H2O
- Size
- 5 x 4 x 2 cm - Miniature
- Special Info
- Radioactive!!
Beautiful acicular sprays of Boltwoodite to 3mm.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Cobalt-Gowganda dist., Ontario, Canada
- Formula
- NiSb
- Size
- 7.5 x 4.5 x 3.5 cm - Sm Cabinet
A rich mass of Breithauptite from the Cobalt district of Ontario showing veinlets and rosette-like growth habits.
- Availability
- Available
- Price
- $175.00
- Locality
- Metcalf mine, Greenlee Co., Arizona, United States
- Formula
- Cu4SO4(OH)6
- Size
- 9 x 4.5 x 2.5 cm - Sm Cabinet
- Tagged
- copper
Exceptional emerald green prismatic and large Brochantite prismatic crystals to 2.5mm. These crystals are truly amazing, well-defined and large for the species.
