Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Locality
- 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- Mn2+4(BeSiO4)3S
- Size
- 6.5 x 5.5 x 2 cm - Sm Cabinet
The second photo shows the Helvine crystals and these are about 1.5mm. On the flip side are excellent bright orange, octahedral Natanite crystals and there are several crystals less than 1mm. The matrix is mostly Ivaite and a few photos show the crystalline nature.
- Availability
- Sold
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- Zn4Si2O7(OH)2·H2O
- Size
- 17 x 10 x 4 cm - Cabinet
A large plate of tabular Hemimorphite crystals to 6mm. These are truly excellent crystals. It was originally a Scott Williams specimen.
- Availability
- Sold
- Locality
- 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe2+Sn4+(OH)6
- Size
- 3.5 x 1 x 1.5 cm - Miniature
- 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
- Available
- Price
- $60.00
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe7S8
- Size
- 9 x 8.5 x 5.5 cm - Sm Cabinet
- Tagged
- sulfide
An impressive large group of Pyrrhotite crystals, the largest to 5.5cm across. Magnetic and Heavy - the cracks are perfectly stable.
- Availability
- Sold
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe7S8
- Size
- 6 x 4 x 3.5 cm - Sm Cabinet
- Tagged
- sulfide
Mineralogically a cool specimen. There are plates of Pyrrhotite to 1.7mm like the one at the center. To the left of that crystal are black crystals of Sphalerite to 7mm. To the right is a spray of Quartz. Now those little reticulated crystals are prismatic Arsenopyrite, which are epitaxially oriented. Also in the hood are saddle shaped Siderite crystals and Galena which can be seen on the backside, though are not crystallized but granular.
