FILEDLode Claim

AMADOR COLUMBUS IV

20.66 acre Lode Claim · Calaveras County, Calif. · BLM Serial No. CA101602049
CLAIM RECORD
SERIAL NUMBER
CA101602049
CLAIM NAME
AMADOR COLUMBUS IV
TYPE
Lode Claim
STATUS
Filed
ACREAGE
20.66 acres
ALIQUOT
NW
LEGAL DESCRIPTION
T.60N., R.130E., Sec. 5, NW
JURISDICTION
Calaveras County, California
Federal Public Land — 1872 Mining Act
LOCATION
COUNTY
Calaveras County
STATE
California
LAT
38.40°N
LNG
120.57°W
SOURCE
BLM MLRS (Mining Location Record System)
Updated weekly via BLM gis.blm.gov
NEAREST OFF-ROAD ACCESS
osm:597952575
0.7 mi
OSM Trail
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20-acre aliquot boundaries, adjacent open ground, USGS mine markers, NOL PDF generation.
Topographic map of AMADOR COLUMBUS IV — Calaveras County, California
USGS National Map · Calaveras County, California
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◎ DISTRICT INTELLIGENCE
SURVEY GEOMETRY — LAYER A

AMADOR COLUMBUS IV occupies the northwest quarter of T.60N., R.130E., Sec. 5, NW — approximately 20.66 acres of federally administered land in Calaveras County, California. Under the General Mining Act of 1872, this parcel is identified by BLM serial number CA101602049 and is subject to annual maintenance obligations of $165 or equivalent assessment work.

LAND HISTORY AND NEWS — LAYER B

Calaveras County holds the highest claim density in California, with Angels Camp and Mokelumne Hill serving as twin hubs of sustained hard-rock prospecting since the 1840s. The county's quartz vein systems — particularly the Jackson Butte district — have yielded both major lode mines and rich placer deposits in adjacent watercourses. Current activity remains strong: renewed interest in porphyry copper-gold transition zones has driven recent staking in the San Andreas and Copper Hill areas. Surface management questions go to the BLM Folsom Field Office; private land ownership is significant here, so verify surface rights before development.

FIELD ACCESS — LAYER C

The nearest mapped access corridor, osm:597952575 (mapped off-road route), lies 0.7 miles from this claim's centroid. off-road vehicle clearance is required. Vehicle staging is feasible along the route shoulder outside claim boundaries before the final approach on foot.

◎ AREA CLAIM DENSITY — 7-MILE RADIUS
ACTIVE CLAIMS
54
FILED / PENDING
75
OPEN EST.
~0
CLAIM DENSITY — 42% ACTIVE

54 active claims surround AMADOR COLUMBUS IV within a 7-mile radius. The estimated open aliquot count is approximate — use the live map for precise 20-acre resolution.

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CA CLAIM LAW — QUICK REF
ACREAGE LIMITS
20 ac (lode) · 160 ac (placer)
ANNUAL FEE
$165/claim/year
RECORDING WINDOW
90 days
RECORDING OFFICE
County Recorder + BLM California State Office
STATUTE
Pub. Resources Code § 2001 · 30 U.S.C. § 22
⚠ Suction dredge moratorium in effect statewide (2016). CEQA review may apply on state land.
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Common Questions

Is land adjacent to the AMADOR COLUMBUS IV mining claim open for staking?
Federal land adjacent to AMADOR COLUMBUS IV (CA101602049) may be open for new mineral location under the General Mining Act of 1872. There are currently 54 active BLM claims within approximately 7 miles. Use AuthoriProspector's 20-acre aliquot grid to identify specific open blocks before staking.
What is a lode claim and how does it differ from other claim types?
A lode mining claim covers a hard-rock vein or ledge and is limited to 20 acres. A placer claim covers alluvial deposits (stream-bed gold, gravels) up to 160 acres. Mill site claims cover processing land. AMADOR COLUMBUS IV is recorded as a Lode Claim.
How do I find the exact boundary of BLM claim CA101602049?
CA101602049 is located in Calaveras County, California. PLSS survey reference: T.60N., R.130E., Sec. 5, NW. AuthoriProspector plots the 20-acre aliquot boundary on a live map with satellite and terrain basemaps — open a free preview to view the interactive boundary.
What are the California mining claim requirements?
California claims on federal land require: a mineral discovery, posted Notice of Location with 4 corner monuments, recording with the County Recorder + BLM California State Office within 90 days, and annual maintenance of $165/claim/year. Statute: Pub. Resources Code § 2001 · 30 U.S.C. § 22.
How do I stake a mining claim near Calaveras County, California?
To stake near Calaveras County: (1) Find an unclaimed aliquot on AuthoriProspector's map; (2) Make a physical mineral discovery; (3) Post Notice of Location and mark all four corners; (4) Generate a legally-formatted NOL PDF via AuthoriProspector; (5) Record with the County Recorder + BLM California State Office within 90 days; (6) Pay BLM $165/claim/year annual maintenance.

About AMADOR COLUMBUS IV

AMADOR COLUMBUS IV is a 20.66-acre Lode Claim in Calaveras County, California (CA), filed under BLM serial number CA101602049 in the Bureau of Land Management Mining Location Record System.

The legal description places this claim at T.60N., R.130E., Sec. 5, NW within the Public Land Survey System (PLSS). The aliquot designation NW identifies the specific 20-acre sub-parcel.

Under the General Mining Act of 1872 (30 U.S.C. § 22), claims on federal land are maintained by filing the annual maintenance fee or performing assessment work. Current BLM status: Filed. 54 additional active claims exist within 7 miles.

To find open federal land adjacent to AMADOR COLUMBUS IV, AuthoriProspector overlays live BLM claims at 20-acre aliquot precision alongside USGS MRDS historic mine markers, BLM wilderness boundaries, and military no-go zones.

Research land and claims with field intelligence combined into one smartphone / desktop application

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Open Free Map →← Calaveras County Claims