Search Archived Mineral Specimens
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Raposa pegmatite, São José do Sabugi, Paraíba, Brazil
- Formula
- Y(Ta,Ti,Nb)2O6
- Size
- Thumbnail 0.5x0.3x0.3cm
- Tagged
- REE mineral
- Special Info
- Type Locality
A 5mm chip of Tantalaeschynite-(Y), a black rare-earth mineral with a resinous luster. It is named for the tantalian end-member of a series with aeschynite-(Y). Tantalaeschynite-(Y) is very rare and found, according to Mindat, is found in only (published) three deposits worldwide. This is the type locality.
- Availability
- Sold
- Locality
- Alto do Giz pegmatite, Rio Grande do Norte, Brazil
- Formula
- Mn2+Ta2O6
- Size
- Miniature 5x4.5x3cm
A thick tabular, shiny, very nice crystal of Tantalite. The crystal tapers downward and has many slightly striated faces.
- Availability
- Sold
- Locality
- Emmons quarry, Oxford, Co., Maine, United States
- Formula
- (Mn,◻)TaTa2O8
- Size
- Thumbnail 2.3x1.1x1.1cm
- Tagged
- pegmatite mineral
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
An excellent partial tabular black crystal of Tantalowodginite with striations to 1cm across with more in a phosphate matrix. Tantalowodginite is an extremely rare mineral found only at Tanco and the Emmons quarry, the type locality. Analyzed.
- Availability
- Sold
- Locality
- Jote mine, Pampa Larga dist., Tierra Amarilla, Copiapó, Atacama, Chile
- Formula
- Ca5Al2(AsO4)4(OH)4 12H2O
- Size
- Miniature 3.5x2.5x2.5cm
- Special Info
- EDS Confirmed
- Special Info
- Type & Only Locality
This is a new IMA mineral recently approved. Tapiaite forms tiny clear lath-like crystals less than 0.03mm in size. Impossible to capture with my photo set-up, these crystals can nonetheless be seen in the photos as all the hundreds or thousands of reflections all over most of the matrix. It is associated with light bluish green Joteite. This is a fabulous, rich specimen. I have a few more of these if you miss out, just let me know. This is the best one.
- Availability
- Sold
- Locality
- Jote mine, Pampa Larga dist., Tierra Amarilla, Copiapó, Atacama, Chile
- Formula
- Ca5Al2(AsO4)4(OH)4 12H2O
- Size
- Miniature 5x3x3cm
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
- Special Info
- Type & Only Locality
This is a new IMA mineral recently approved. Tapiaite forms tiny clear lath-like crystals less than 0.03mm in size. Impossible to capture with my photo set-up, these crystals can nonetheless be seen in the photos as all the hundreds or thousands of reflections all over most of the matrix. It is associated with light bluish green Joteite. This is a fabulous, rich specimen.
- Availability
- Sold
- Locality
- Tip Top mine, Custer Co., South Dakota, United States
- Formula
- LiFe3+PO4(OH)
- Size
- SmCabinet 6.5x5.5x4cm
- Tagged
- phosphate
This is a nice cluster of light translucent green tabular Tavorite crystals. The cluster measures about 1mm but contains dozens of individual well-defined crystals. Typically Tavorite at the Tip Top is light green and granular looking with sugary habit. Tavorite crystals such as these are rare - from anywhere. It is a relatively rare lithium phosphate found exclusively in granitic pegmatites. The matrix of this specimen is mostly compact fibrous black Rockbridgeite.
