Sweetwater Mine Calcite Formation
Updated September 1, 2026
| Lot number | 0190 |
| Estimate | $200 - $300 |
| Opening bid | $80 |
| Auction | Fall Rock and Fossil Timed Clearance Auction |
| Date | September 19, 2026 at 1:00 PM EDT |
| Auction house | Fossils & Gemstones of Houston |
| Location | Houston, Texas |
Large calcite formation from the Sweetwater Mine in Montana. 8" x 11.5" x 3.25". 13 lbs, 10 oz.
Register & bid on this lot at Bidspirit →
More lots in this auction
- High Grade Amethyst Crystal Cluster
- 53 Pound Apophyllite and Pink Heulandite Formation
- Huge Cubic Fluorite Specimen
- Polished Hematoid Quartz Heart
- Water-Clear Bermejillo Selenite Formation
- 8 Optical Calcite Iceland Spar Rhomboid Formations
- Live Edge Labradorite Freeform
- Denim Lapis Lazuli Freeform
See all lots in Fall Rock and Fossil Timed Clearance Auction →