Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Mt. Pleasant mine, Charlotte Co., New Brunswick, Canada
- Formula
- (Fe3+,Mn2+)Sn4+(OH,O)6
- Size
- Thumbnail 3x2.4x2cm
- Tagged
- tin
Murky yellow, crude tetragonal dipyramids to about 0.5mm. There are numerous crystals all over the specimen. I am not sure what the brownish yellow spherical groups are. The matrix is Fluorite.
- Availability
- Sold
- Locality
- Crestmore, Riverside Co., California, United States
- Formula
- Ca9Si6O16(OH)10·6H2O
- Size
- SmCabinet 6.5x4x1cm
- Special Info
- Type Locality
I have dealt a lot of Crestmore material and acquired quite a bit over the years, but I have never seen a Jennite of this magnitude from the type locality, Crestmore. All of the white crystals on this specimen are Jennite. On the back of the old label Kidwell states whee his specimen originated: "1963 C.M. Jenni".....a bonus of course.
- Availability
- Sold
- Locality
- Centennial Eureka mine, Tintic dist., Juab Co., Utah, United States
- Formula
- Cu2+3Te6+O6·2H2O
- Size
- Thumbnail 2x1.5x0.4cm
- Tagged
- copper , tellurium
Small, tiny, about 0.25mm or less single bright green, extremely rare, Jensenite crystal associated with dark, grass green, Mcalpineite on the backside. The Jensenite was visually identified by Martin Jensen himself.
- Availability
- Sold
- Locality
- Gem mine, San Benito Co., California, United States
- Formula
- NaBa2Fe2+Ti2Ce2(SiO3)8O2(OH)·H2O
- Size
- SmCabinet 5.5x4.5x2cm
- Special Info
- Type Locality
Tiny 1mm or less orange crystals scattered with Neptunite (4mm). There are no less than 19 crystals.
- Availability
- Sold
- Locality
- Gem mine, San Benito Co., California, United States
- Formula
- NaBa2Fe2+Ti2Ce2(SiO3)8O2(OH)·H2O
- Size
- Thumbnail 2x3x1.5cm
- Special Info
- Type Locality
Perfect, lustrous orange-brown Joaquinite-Ce crystals with striated faces in a 2mm cluster.
- Availability
- Sold
- Locality
- Dallas Gem mine, San Benito Co., California, United States
- Formula
- NaBa2Fe2+Ti2Ce2(SiO3)8O2(OH)·H2O
- Size
- SmCabinet 5.5x3.5x1cm
- Special Info
- Type Locality
I have never seen so many Joaquinites on one specimen. And these are excellent crystals to 1mm. Oh, there is a 1.3cm Neptunite on top but the black background hides it. There is also just a little bit of a partial Benitoite near the outer edge.
