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MERCURY
MINES
WORLD
CHART NO. I
No.
Name and Location
Ownership and Nation-
Production
ORE DEPOSITS AND ORE RESERVES
PRODUCTION METHODS
TRANSPORTAT ION
on
of Mine or Produc-
ality of Controlling
Year
Flasks of
Geological and Mineralogical Notes and Ore Analysis
and Plant Capacities
Labor Employed
Map
ing Area
Capital
76 pounds
and Other Data
ALASKA
1.
Decourcey Mine,
Decourcey Mining Co.
Lenses of cinnabar averaging 1 foot thick occur
Cinnabar lenses developed by
Air service from
Decourcey Mountain
United States Control.
along 5 zones of enrichment in sandstone and shale
surface trenches and adits. Ore
Flat to Decourcey on
Region, 35 miles
beds over 1,800 feet in length and 385 feet in
hand sorted to 30 percent 4g.
charter basis at $30
southwest of Flat
width. Sedimentary beds intruded by dikes and sills
conc. Retort plant constructed
a trip, 800 lbs. of
on east slope of
of diabase. Ore bodies vary in dip from 50 to 80
at mine. Output 1944, 400 fl.
freight. From Fair-
Iditarod River.
Alaska
Production
degrees. Ore averages 32 lbs. Hg per ton. Reserves:
(est.)
banks to Flat,
Developed ore, 6,970 tons containing 322 lbs. Hg
freight by air is 26
1940
162
per ton.
cts. a pound
1941
Not separated
1942
Not separated
2.
Red Devil Mine, 8
New Idria Alaska Co.
1943
786
Cinnabar associated with stibnite in brecciated and
Mined underground through adits
Transported by boat
miles west of Sleit-
Headquarters: San
1944
548
altered andesite dikes of Tertiary age intruding
and shafts. Cut and fill method
to United States.
nut, which is on the
Francisco, California.
1945
Not separated
Upper Cretaceous sundstone and shales. Ore occurs in
of mining. 40-ton wood-fired
Owners also operate
Kushokwim River
United States - Control
1946
699
form of lenses in both andesite and sediments along
Gould Rotary furnace. Develop-
New Idria mine in
about midway
the contact. Ore averages 117 Hg. Reserves: 4
ment partially financed by Gov-
California. Mine
between Bethel and
lenses have total indicated reserve 11,000 tons
ernment Funds. Further opera-
could yield 300 to
McGrath. George-
45.3 lbs. Hg/ton. 7 lenses inferred reserve 15,000
tions depend on higher prices.
400 flasks a month
town District
tons 36.7 lbs. Hg/ton.
for a few years at
61° 46'N 1570 20'W
high prices.
CANADA
Canada
Production
.(a)
Pinchi Lake Mine
Consolidated Mining
1939
6
The two mines are 90 miles apart but both occur in
Mine developed by a 3-compartment
Pinchi Lake capacity
12 miles from Fort
and Smelting Co.
1940
2,024
the same belt which lies along a a jor fault zone
shaft, 250 feet deep on 65 degree
increased 20 times
St. James, on
Headquarters Trail,
1941
7,057
about 150 miles long and from 200 to 1000 feet wide.
incline. Six mine levels opened,
in 3 years. Start-
Manson Creek,
B. C. Canadian
1942
13,630
The ore bodies at these two mines and elsewhere along
total of about 5,000 feet of
ed producing in 1940
British Columbia
Control.
1943
22,240
the belt are found in sheared and brecciated lime-
drifts, 6,000 feet of raises and
and tried cold press-
1944
9,682
stone or in carbonitized serpentine with fault gouge
20,366 feet of diamond drilling.
ing but discontinued
3.(b)
Bralorne Takla Mine
Bralorne Mines Ltd.
1945
and impervious caprock often controlling deposition
Treatment plant capacity 1200 tons
it because it proved
Takla Lake
1946
of cinnabar. At Pinchi Lake, the larger cinnabar ore
ore per day consists of coarse
unsuccessful. Mines
British Columbia
bodies are in limestone overlain by schist. The
crushing by gyratory crushers,
closed down in 1944
Pinchi Lake 52,600
grade varies considerably from 0.25 to 3% Hg.
wedge roasters, rotary kiln fur-
with cancellation of
from 1940-44, value
naces and condensers. Reported
contracts with
$10,000,000.
mercury recovery 95%, impurities
United States.
Bralorne 1,700
0.005%.
in 9 months.
CALIFORNIA
4.
New Idria Mine,
New Idria Quicksilver
Largest producer in
Ore is cinnabar in silicified shale breccia beneath
Mine developed by means of adits
Produces more mer-
57 miles south of
Mining Co.
the United States.
steep thrust fault that brings Jurassic sandstone
at levels 200, 300, 400, 500, 700
cury annually than
Tres Pinos, 67 miles
United States Control.
Accounted for more
and serpentine against overturned Cretaceous shale
and 1,000 ft. below outcrop,from
its next three
southeast of Holli-
than 1/3 country's
and sandstone beds. Both ore and silicified zones
1,000 ft. level a three compar t-
United States com-
ster, 55 miles south-
production in 1946.
are controlled by changes in dip and strike of fault
ment winze extends to 1,400 ft.
petitors. 75-100
east of Mendozo.
Second largest all
and are principally in inverted troughs. Main min-
level. Total length of under-
workmen.
San Benito County.
time producer.
eralized zone, which contains several ore shoots is
ground workings is 20 miles. Ore
Altitude 2,500 to
20-100 feet wide, 1,000 feet long and 1,500 feet
is processed in 4 Gould rotary
5,200 feet.
deep. Ore averages 0.5 - 1.5% Hg. Reserves: Old
furnaces.
dumps and stope fills which contributed much to pro-
duction in recent years are largely exhausted. Newly
discovered ore shoots are large and high grade.
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"ocrText": "MERCURY\nMINES\nWORLD\nCHART NO. I\nNo.\nName and Location\nOwnership and Nation-\nProduction\nORE DEPOSITS AND ORE RESERVES\nPRODUCTION METHODS\nTRANSPORTAT ION\non\nof Mine or Produc-\nality of Controlling\nYear\nFlasks of\nGeological and Mineralogical Notes and Ore Analysis\nand Plant Capacities\nLabor Employed\nMap\ning Area\nCapital\n76 pounds\nand Other Data\nALASKA\n1.\nDecourcey Mine,\nDecourcey Mining Co.\nLenses of cinnabar averaging 1 foot thick occur\nCinnabar lenses developed by\nAir service from\nDecourcey Mountain\nUnited States Control.\nalong 5 zones of enrichment in sandstone and shale\nsurface trenches and adits. Ore\nFlat to Decourcey on\nRegion, 35 miles\nbeds over 1,800 feet in length and 385 feet in\nhand sorted to 30 percent 4g.\ncharter basis at $30\nsouthwest of Flat\nwidth. Sedimentary beds intruded by dikes and sills\nconc. Retort plant constructed\na trip, 800 lbs. of\non east slope of\nof diabase. Ore bodies vary in dip from 50 to 80\nat mine. Output 1944, 400 fl.\nfreight. From Fair-\nIditarod River.\nAlaska\nProduction\ndegrees. Ore averages 32 lbs. Hg per ton. Reserves:\n(est.)\nbanks to Flat,\nDeveloped ore, 6,970 tons containing 322 lbs. Hg\nfreight by air is 26\n1940\n162\nper ton.\ncts. a pound\n1941\nNot separated\n1942\nNot separated\n2.\nRed Devil Mine, 8\nNew Idria Alaska Co.\n1943\n786\nCinnabar associated with stibnite in brecciated and\nMined underground through adits\nTransported by boat\nmiles west of Sleit-\nHeadquarters: San\n1944\n548\naltered andesite dikes of Tertiary age intruding\nand shafts. Cut and fill method\nto United States.\nnut, which is on the\nFrancisco, California.\n1945\nNot separated\nUpper Cretaceous sundstone and shales. Ore occurs in\nof mining. 40-ton wood-fired\nOwners also operate\nKushokwim River\nUnited States - Control\n1946\n699\nform of lenses in both andesite and sediments along\nGould Rotary furnace. Develop-\nNew Idria mine in\nabout midway\nthe contact. Ore averages 117 Hg. Reserves: 4\nment partially financed by Gov-\nCalifornia. Mine\nbetween Bethel and\nlenses have total indicated reserve 11,000 tons\nernment Funds. Further opera-\ncould yield 300 to\nMcGrath. George-\n45.3 lbs. Hg/ton. 7 lenses inferred reserve 15,000\ntions depend on higher prices.\n400 flasks a month\ntown District\ntons 36.7 lbs. Hg/ton.\nfor a few years at\n61° 46'N 1570 20'W\nhigh prices.\nCANADA\nCanada\nProduction\n.(a)\nPinchi Lake Mine\nConsolidated Mining\n1939\n6\nThe two mines are 90 miles apart but both occur in\nMine developed by a 3-compartment\nPinchi Lake capacity\n12 miles from Fort\nand Smelting Co.\n1940\n2,024\nthe same belt which lies along a a jor fault zone\nshaft, 250 feet deep on 65 degree\nincreased 20 times\nSt. James, on\nHeadquarters Trail,\n1941\n7,057\nabout 150 miles long and from 200 to 1000 feet wide.\nincline. Six mine levels opened,\nin 3 years. Start-\nManson Creek,\nB. C. Canadian\n1942\n13,630\nThe ore bodies at these two mines and elsewhere along\ntotal of about 5,000 feet of\ned producing in 1940\nBritish Columbia\nControl.\n1943\n22,240\nthe belt are found in sheared and brecciated lime-\ndrifts, 6,000 feet of raises and\nand tried cold press-\n1944\n9,682\nstone or in carbonitized serpentine with fault gouge\n20,366 feet of diamond drilling.\ning but discontinued\n3.(b)\nBralorne Takla Mine\nBralorne Mines Ltd.\n1945\nand impervious caprock often controlling deposition\nTreatment plant capacity 1200 tons\nit because it proved\nTakla Lake\n1946\nof cinnabar. At Pinchi Lake, the larger cinnabar ore\nore per day consists of coarse\nunsuccessful. Mines\nBritish Columbia\nbodies are in limestone overlain by schist. The\ncrushing by gyratory crushers,\nclosed down in 1944\nPinchi Lake 52,600\ngrade varies considerably from 0.25 to 3% Hg.\nwedge roasters, rotary kiln fur-\nwith cancellation of\nfrom 1940-44, value\nnaces and condensers. Reported\ncontracts with\n$10,000,000.\nmercury recovery 95%, impurities\nUnited States.\nBralorne 1,700\n0.005%.\nin 9 months.\nCALIFORNIA\n4.\nNew Idria Mine,\nNew Idria Quicksilver\nLargest producer in\nOre is cinnabar in silicified shale breccia beneath\nMine developed by means of adits\nProduces more mer-\n57 miles south of\nMining Co.\nthe United States.\nsteep thrust fault that brings Jurassic sandstone\nat levels 200, 300, 400, 500, 700\ncury annually than\nTres Pinos, 67 miles\nUnited States Control.\nAccounted for more\nand serpentine against overturned Cretaceous shale\nand 1,000 ft. below outcrop,from\nits next three\nsoutheast of Holli-\nthan 1/3 country's\nand sandstone beds. Both ore and silicified zones\n1,000 ft. level a three compar t-\nUnited States com-\nster, 55 miles south-\nproduction in 1946.\nare controlled by changes in dip and strike of fault\nment winze extends to 1,400 ft.\npetitors. 75-100\neast of Mendozo.\nSecond largest all\nand are principally in inverted troughs. Main min-\nlevel. Total length of under-\nworkmen.\nSan Benito County.\ntime producer.\neralized zone, which contains several ore shoots is\nground workings is 20 miles. Ore\nAltitude 2,500 to\n20-100 feet wide, 1,000 feet long and 1,500 feet\nis processed in 4 Gould rotary\n5,200 feet.\ndeep. Ore averages 0.5 - 1.5% Hg. Reserves: Old\nfurnaces.\ndumps and stope fills which contributed much to pro-\nduction in recent years are largely exhausted. Newly\ndiscovered ore shoots are large and high grade."
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