RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Gyp Creek-1 (Occurrence)Goldberg Prospect (Past Producer)Little Croton Creek-1 (Occurrence)Kahn Quarry (Occurrence)Maverick Flat-1 (Occurrence)Mcfaddin Prospect (Occurrence)Sites 88-89 (Occurrence)Salt Creek-2 (Occurrence)Salt Creek-1 (Occurrence)Pyron Prospect (Past Producer)Driver Ranch-1 (Occurrence)Bluff Creek-1 (Occurrence)
Past ProducerProducerProspectOccurrenceStatus unknown
12 paw pins, one per site. Hover or tap a pin for the site name. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

Goldberg 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 11 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as past producer for Copper. Minerals mentioned: Copper. Approx. location 33.602, -99.955. 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?

10
Occurrence

The mineral was noted here, without development.

2
Past Producer

Produced ore or material at some point in the past.

Status terms come from USGS MRDS records.

Mineral cards

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

Minerals recorded here

Malachite 12Chalcocite 4Covellite 1

Commodities

Copper 12

Sites

SiteCommodityMinerals recordedStatusApprox. location
Goldberg ProspectCopperChalcocite, Covellite, MalachitePast Producer33.602, -99.955
Little Croton Creek-1CopperChalcocite, MalachiteOccurrence33.527, -99.968
Salt Creek-2CopperChalcocite, MalachiteOccurrence33.721, -99.930
Pyron ProspectCopperChalcocite, MalachitePast Producer33.735, -99.906
Sites 88-89CopperMalachiteOccurrence33.497, -99.945
Mcfaddin ProspectCopperMalachiteOccurrence33.522, -99.949
Driver Ranch-1CopperMalachiteOccurrence33.614, -99.909
Maverick Flat-1CopperMalachiteOccurrence33.625, -99.938
Salt Creek-1CopperMalachiteOccurrence33.719, -99.913
Bluff Creek-1CopperMalachiteOccurrence33.761, -99.871
Kahn QuarryCopperMalachiteOccurrence33.665, -99.940
Gyp Creek-1CopperMalachiteOccurrence33.452, -99.987

Fossil collections

The Paleobiology Database lists 36 fossil collection records in Knox County. These are research records, not public dig sites.

Nearby counties

King County · Stonewall County · Foard County · Hardeman County · Throckmorton County

Texas mineral guides

Back to all Texas counties.

Related articles

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