Yunosawa Mine

JP / Hokkaido

•43.73169, 142.66515View on Map Open in Google Maps

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About this location

Yunosawa Mine is a historic mining site in Hokkaido, documented by the USGS Mineral Resources Data System. The mineralization is hosted in Andesite. Reported specimens include Cinnabar, Kaolin, Pyrite, Quartz, Sericite; logged ore minerals are Cinnabar; gangue is recorded as Kaolin, Pyrite, Quartz, Sericite. Workings are underground.

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Found Here

CinnabarKaolinPyriteQuartzSericite

Geology and deposit

Host rock: Andesite
Associated rock: Rhyolite, Andesite

Ore minerals

Cinnabar

Gangue minerals

KaolinPyriteQuartzSericite

Structure

Ew-Striking Fault, Wide Defin Zone

Ore control

2 Parallel Zones (Wnw-Trending) Of Mineralization; Northerly One Primary, Extends 700 M E Of No 1 Shaft, Up To 70 M Wide. Extensive Fracturing, Faulting. Deposit Controlled Along Wnw And Nne Directions.

Alteration

Propyillization, Argillization

Mining history

Status: Past Producer
Workings: Underground
Production years: 1953 - ?

Records and references

Cited references

SAITO, M, Y. WATANABE, 1959 , "ON THE HG ORE DEPOSIT OF YINOSAWA MINE," GEOL. SUR. JAP. BULL VOL 10 NO 2 P. 141 - 146YAJIMA, S., 1951 , "MERCURY DEPOSITS OF HOKKAIDO," HOKKAIDO GEOL SUMMARY REPORT NO. 17SAITO, M. 1959 , GEOL SUR JAP BULL

Data: USGS Mineral Resources Data System, record 10040087 — view the source record

Difficulty

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Location on Map

Coordinates: 43.73169, 142.66515

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