RockWoofSketch map
Woof’s favorite find
Bauer Prospect
We picked it because its USGS record mentions 1 of the minerals on our cards and 1 of our card minerals overall. That ties with 1 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as occurrence for Copper. Minerals mentioned: Copper. Approx. location 30.701, -99.042. USGS record.
Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.
Field cards: what kind of sites?
The mineral was noted here, without development.
Status not recorded.
Was producing when the record was made.
Status terms come from USGS MRDS records.
Mineral cards
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
2 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
No individual minerals are listed in these records.
Commodities
Copper 2Granite 1Tin 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Grit Stream Tin Deposits | — | — | Occurrence | 30.783, -99.341 |
| Haynie Mine | Copper | — | Occurrence | 30.836, -99.012 |
| Streeter Stream Tin Deposit | — | — | Occurrence | 30.759, -99.362 |
| Spiller Mine | — | — | Unknown | 30.905, -99.093 |
| Mason County Quarry | Granite | — | Producer | 30.699, -99.178 |
| Bauer Prospect | Copper | — | Occurrence | 30.701, -99.042 |
| Kothmann Tract | — | — | Unknown | 30.878, -99.020 |
| Tin Prospect | Tin | — | Occurrence | 30.774, -99.345 |
Fossil collections
The Paleobiology Database lists 121 fossil collection records in Mason County. These are research records, not public dig sites.
Nearby counties
McCulloch County · San Saba County · Llano County · Gillespie County · Blanco County
Texas mineral guides
Back to all Texas counties.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated