Yaqui River Placer

Producer in Sonora, Mexico with commodities Gold, Tungsten

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Mineral occurrence model information
Nearby scientific data
Economic information about the deposit and operations
Mining district
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10049085
MRDS ID	MX00307
Record type	Site
Current site name	Yaqui River Placer
Related records	10304206

Geographic coordinates

Geographic coordinates:	-109.68396, 28.19331 (WGS84)
Relative position	PLACERS EXTEND ALONG SEVERAL KM SECTION OF YAQUI RIVER IMMEDIATELY DOWNSTREAM OF NACIMIENTO, MX.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country	State
Mexico	Sonora

Commodities

Commodity	Importance
Gold	Primary
Tungsten Critical	Secondary

Materials information

Materials	Type of material
Gold	Ore
Scheelite	Ore

Analytical data

Result	HIGHEST ASSAY OF A RELIABLE SAMPLE OF THE BAR NEAREST NACIMIENTO GAVE 0.1% WO3 AND 2.00 PESOS (1943 PRICE) OF GOLD/CM, BUT THIS CONTENT WAS SEVERAL TIMES THE AVERAGE VALUE.

Mineral occurrence model information

Model code	119
USGS model code	39a
Deposit model name	Placer Au-PGE
Mark3 model number	54

Nearby scientific data

(1)	-109.68396, 28.19331	ListMap

Economic information

Economic information about the deposit and operations

Development status	Producer
Commodity type	Metallic
Deposit size	Small
Significant	No

Mining district

District name	Nacimiento

Comments on development

RIVER BARS WORKED INTERMITTENTLY BY GAMBUSINOS FOR MANY YEARS.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	MX00307

Bibliographic references

Deposit

WIESE, JOHN H., AND CARDENAS, SALVADOR, 1945, TUNGSTEN DEPOSITS OF THE SOUTHERN PART OF SONORA, MEXICO: USGS BULL 946, P. 103-130

General comments

Subject category	Comment text
Deposit	RECENT GRAVEL BARS ON BOTH SIDE OF THE CHANNEL OF YAQUI R. FROM NACIMIENTO DOWNSTREAM FOR SEVERAL KM KNOWN TO CONTAIN GOLD AND SCHEELITE. THE BARS ARE AT LEAST 10 M THICK LOCALLY, AND COULD CONTAIN AS MUCH AS 1,000,000 CM OF GRAVEL + SAND. JOINTS IN GRANITE BEDROCK MAKES SURFACE VERY UNEVEN, AND THERE ARE NUMEROUS LARGE BOULDERS IN GRAVELS THAT WOULD HAMPER ANY DREDGING OPERATIONS. GOLD VALUES CONSISTENT IN THE BARS, BUT SCHEELITE CONTENT DECREASES DOWNSTREAM FROM NACIMIENTO.

Subject category

Comment text

Deposit

RECENT GRAVEL BARS ON BOTH SIDE OF THE CHANNEL OF YAQUI R. FROM NACIMIENTO DOWNSTREAM FOR SEVERAL KM KNOWN TO CONTAIN GOLD AND SCHEELITE. THE BARS ARE AT LEAST 10 M THICK LOCALLY, AND COULD CONTAIN AS MUCH AS 1,000,000 CM OF GRAVEL + SAND. JOINTS IN GRANITE BEDROCK MAKES SURFACE VERY UNEVEN, AND THERE ARE NUMEROUS LARGE BOULDERS IN GRAVELS THAT WOULD HAMPER ANY DREDGING OPERATIONS. GOLD VALUES CONSISTENT IN THE BARS, BUT SCHEELITE CONTENT DECREASES DOWNSTREAM FROM NACIMIENTO.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-OCT-1987	Leonard, Kenneth R. (Page, Norman J.)	U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.