Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Hoskins mine, Grenfell, Forbes Co., New South Wales, Australia
- Formula
- NaMn3+Si2O6
- Size
- Miniature 5x4.5x0.4cm
A slab which has red segregations of Namansilite and straw colored Noelbensonite.
- Availability
- Sold
- Locality
- Sludyanka, Lake Baikal area, Prebaikalia, Siberia, Russia
- Formula
- NaV3+Si2O6
- Size
- Chip xxcm
- Tagged
- vanadium
- Special Info
- Type Locality
Tiny, less than 0.75mm glassy bright green crystals. Rare. This is author's study material - see prov. tab.
- Availability
- Sold
- Locality
- 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe2+Sn4+(OH)6
- Size
- Miniature 4.5x3.5x1.5cm
- Tagged
- tin
Bright Orange octahedral crystal with cubic faces to nearly 2mm on shiny black Ilvaite crystals with waterclear Fluorite and possible brown feathery Rhodochrosite. Natanite is a rare oxide of tin and found in less than 15 places worldwide. There are no US localities. Of course there are no economic deposits of tin in the US either, so not a whole lot of occurences of tin mineralization.
- Availability
- Sold
- Locality
- 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe2+Sn4+(OH)6
- Size
- Miniature 3.5x1x1.5cm
- Tagged
- tin
There are about 13 crystals of Natanite on the Ilvaite. The best is about 0.5mm. Natanite is a rare tin mineral.
- Availability
- Sold
- Locality
- Kedykverpakhk Mt., Lovozero Massif, Kola Peninsula, Russia
- Formula
- Na2TiO(SiO4)
- Size
- SmCabinet 8x3.5x2.5cm
- Special Info
- Fluorescent
- Special Info
- Type Locality
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
This rare sodium titanium silicate is found only in pegmatites of the Kola peninsula. The crystals are embedded in the matrix as 1mm grains which fluoresce a nice bright blue color. Without the aid of UV these grains are hard to distinguish from the rest of the alkaline matrix.
- Availability
- Sold
- Locality
- Chuquicamata mine, El Loa Prov., Antofagasta, Chile
- Formula
- NaCu2(SO4)2(OH)·H2O
- Size
- SmCabinet 6.5x4x4cm
- Tagged
- copper
- Special Info
- Type Locality
An excellent specimen of this rare copper mineral found in only three worlwide localities thus far. This is the type locality. The specimen contains numerous well-formed translucent crystals from 1-4mm as seen in the photos.
