Helmke Manganese Group

Manganese prospect · Trinity County, California

ProspectManganeseSurfaceUSGS MRDS

Section

What kind of site this is
ORE · MANGANESEBENCHESSECTION · ILLUSTRATIVE
195019752000today

discovered 1942

Drawn as an open-pit mine, dug down in benches from the surface. The ore color stands for manganese. Federal records note the kind of operation and its status, not its depth or layout, so this is a typical example rather than a survey of this site.

Location

StateCalifornia
CountyTrinity
Coordinates40.13065, -123.50001

Commodities

TertiaryManganese

Mine Details

StatusProspect
TypeSurface
Discovery Year1942
Data SourceUSGS MRDS
Source ID10263033
This siteNearby records

Search within 10 miles of here Open in Google Maps

Nearest Recorded Sites

SiteDistanceCommodityStatus
Big Horn No. 1 and No. 20.3 miOccurrence
Big Horn No. 10.3 miProspect
Schoolhouse No. 10.3 miOccurrence
Blue Lizard Prospect0.4 miProspect
Blue Lizard Prospect0.4 miOccurrence
Maphis Peak #10.4 miManganeseUnknown
Twisted Oak No. 10.5 miOccurrence
Broken Hammer Prospects0.8 miProspect
Twisted Oak No.10.8 miProspect
Shell View No. 21.1 miManganeseProducer
Shell View No. 11.3 miOccurrence
Montgomery Deposit1.3 miProspect

What This Means

This location is classified as a mineral prospect or occurrence — a site where minerals have been identified but no significant mining has taken place. These sites typically have minimal environmental impact but indicate the presence of mineral deposits in the area.

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