Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Locality
- Yaogangxian mine, Chenzhou, Hunan prov., China
- Formula
- Fe2+WO4
- Size
- 8.5 x 5 x 4 cm - Sm Cabinet
This is really one to be appreciated once in hand though, you will be amazed at the degree of how well crystallized every mineral is. The Fluorite is to about 3mm with purple cores and the Ferberite is large and lustrous to 2.2cm. The brown crystals are actually excellent, thick crystals of Muscovite.
- Availability
- Sold
- Locality
- Lower Rambler mine, Beaver Creek dist., Boulder Co., Colorado, United States
- Formula
- Fe2+WO4
- Size
- 9 x 5 x 3.5 cm - Sm Cabinet
- Tagged
- tungsten
Does not look like much of a specimen, but under the scope there are hundreds of black, lustrous, tabular crystals to around 1mm.
The Lower Rambler was a tungsten mine in the early 1900's and was a substantial producer after the tungsten was discovered in the Nederland area in 1899. The mine sits at an elevation of 8,575ft. It is described in various USGS reports, which describes the Ferberite crystals occuring in "horn" breccia and sheeted granite. The Nederland area during the early 1900's was considered the most important ferberite-producing district in the world. It is centered around Nederland in Boulder county in scattered deposits and is roughly 4 to 5 miles wide and 10-12 in length.
Hampson self-collected this specimen in 1963. This may be described as a "legacy" specimen.
- Availability
- Sold
- Locality
- Berere Pegmatite Field, Bekapaika Commune, Tsaratanàna, Betsiboka, Madagascar
- Formula
- YNbO4
- Size
- 3 x 2.5 x 2.5 cm - Thumbnail
- Tagged
- REE mineral
A fabulous group of Fergusonite. The chemical formula given below is for Fergusonite-(Y) as I have not had this one tested. On the termination is a fractured off spot, which is actually a good thing since you can see the internal nature. It is metamict, so it doesn't yield any crystal structure internally but the external morphology is preserved.
- Availability
- Sold
- Locality
- near Bootleg Canyon, Walker River, California, United States
- Formula
- Fe3+2(Mo6+O4)3ยท7H2O
- Size
- 7 x 4.5 x 3 cm - Sm Cabinet
Molybdenite altered to yellow cake of Ferrimolybdenite. Rich piece.
- Availability
- Sold
- Locality
- Little Patsy pegmatite, Jefferson Co., Colorado, United States
- Formula
- CeF3
- Size
- 2.5 x 1.5 x 0.8 cm - Thumbnail
- Tagged
- REE mineral
Two excellent crystals in combo to 1.7cm. The Little Patsy boast the best and largest crystals in the world. This one is quite nice with good form on both crystals.
- Availability
- Available
- Price
- $45.00
- Locality
- Koashva Mt., Khibiny Massif, Kola Peninsula, Russia
- Formula
- SrCaCa3(PO4)3F
- Size
- 4 x 3 x 2 cm - Miniature
- Tagged
- phosphate
- Special Info
- Type Locality
Tannish orange crystalline grains. Fluorcaphite is basically a strontium apatite.
