Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $3,750.00
- Locality
- Djebel Nador, Constantine prov., Algeria
- Formula
- PbSb3+O2Cl
- Size
- 7 x 5 x 3 cm - Sm Cabinet
- Special Info
- Antique Specimen
Smoky brown, translucent crystal plates measuring 7mm on edge. This is an antique specimen once in the collection of Emile Bertrand circa 1890's. Betrand was an early pioneer in the study of optical mineralogy and introduced the "Betrand" lens to the petrology microscope. He was one of the founders of the French Mineralogy Society and went to school at the Paris School of Mines. Please see the Mineralogical Record label archive for more information (click here) .
Betrand's label along with a few other labels are shown in the provenance tab.
- Availability
- Available
- Price
- $575.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- PbSb3+O2Cl
- Size
- 5.3 x 2.5 x 1.2 cm - Sm Cabinet
Yellowish orange tabular crystals of Nadorite. These are extremely hard crystals to obtain on the market. The best crystal is that of the second photo. It is 1mm and is the type of crystal that is shown on Mindat by Christian Rewitzer. There are several smaller crystals. The white sprays have been identified as Mimetite at the RRUFF lab. The Mimetite was an unkonwn as reported in the book "Langban" by Bollmark and others.
