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

Market Lake Placer (Past Producer)Heise Gold Placer + 2 more nearby (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
2 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 1 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

Spare Time Mine

We picked it because its USGS record mentions 2 gem or collectible minerals (Gold, Silver) and 2 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence. Minerals mentioned: Gold, Silver. Approx. location 45.828, -115.441. 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?

3
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

Gold 2

Commodities

Gold 2Geothermal 2

Sites

SiteCommodityMinerals recordedStatusApprox. location
Market Lake PlacerGoldGoldPast Producer43.713, -112.091
Heise Gold PlacerGoldGoldPast Producer43.633, -111.695
Geothermal LocationGeothermal—Occurrence43.644, -111.687
Spare Time Mine——Occurrence45.828, -115.441
Hawley Warm SpringGeothermal—Occurrence43.654, -111.702

Nearby counties

Madison County · Teton County · Bonneville County · Bingham County · Clark County

Idaho mineral guides

Back to all Idaho 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