CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit group number Country Location Names Commodities
9 United States (New York) 44.43.30 N -- 073.54.15 W Lyon Mountain ore belt; Lyon Mountain deposit group Fe
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-03
   
Deposit group name(s): Lyon Mountain ore belt; Lyon Mountain deposit group
Political location(s): United States; Province or state: New York; Subprovince or locality: Clinton County; Nearest community: Standish Town
Deposit clan (type): Kiruna-type
Deposit (sub) types: intrusion-hosted; deposition of magnetite from sodic, ore-bearing solutions genetically related to the host Lyon Mountain leucogranitic suite, at 600 to 700 degrees C.
Geologic province: Grenville Province
Geologic subprovince: Adirondack Mountains
Geologic district: Adirondack Highlands
Deposit object located: Chateaugay open pit
Commodities: Fe
Geological ages: Late Mesoproterozoic (host rocks)
Host rocks: (1) intrusive; unclassified granitoid rocks
Host rock stratigraphy:Lyon Mountain Intrusive Suite
Radiometric ages: Object dated: Host Rocks; Age - Ma: 1,055; +7; -7; Dating method: U-Pb; Concentrate: zircon; Source rock: K-rich leucogranitic gneiss; Formal name: Lyon Mtn. suite / sample AM 86-10; Event dated: host rock; Interpretive comment: outer zone of zircons dated; late stage Ottawan orogeny; zircon cores dated at 1152 +/- 11Ma; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Host Rocks; Age - Ma: 1,055; +7; -7; Dating method: U-Pb; Concentrate: zircon; Source rock: Na-rich leucogranitic gneiss; Formal name: Lyon Mtn. suite / sample AM 86-14; Event dated: host rock; Interpretive comment: outer zone of zircons dated; late stage Ottawan orogeny; zircon cores dated at 1141 +/-16 Ma; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Host Rocks; Age - Ma: 1,060; +10; -10; Dating method: U-Pb; Concentrate: zircon; Source rock: K-rich leucogranitic gneiss; Formal name: Lyon Mtn. suite / sample AM 86-4; Event dated: host rock; Interpretive comment: outer zone of zircons dated; late stage Ottawan orogeny; zircon cores dated at 1158 +/-16 Ma; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Host Rocks; Age - Ma: 1,048.7; +2.2; -2.2; Dating method: U-Pb; Concentrate: zircon; Source rock: K-rich leucogranitic gneiss; Formal name: Lyon Mtn. suite / sample 9-23-85-6; Event dated: host rock; Interpretive comment: outer zone of zircons dated; late stage Ottawan orogeny; zircon cores small or absent; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Host Rocks; Age - Ma: 1,047.3; +2.2; -2.2; Dating method: U-Pb; Concentrate: zircon; Source rock: fayalite granite; Formal name: Lyon Mtn. suite / sample AM 86-11; Event dated: host rock; Interpretive comment: massive phase of the gneissic intrusive emplaced at late stage of the Ottawan orogeny; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Host Rocks; Age - Ma: 1,047; +10; -10; Dating method: U-Pb; Concentrate: zircon; Source rock: fayalite granite; Formal name: Lyon Mtn.suite / sample CLFG; Event dated: host rock; Interpretive comment: Late Ottawan massive phase; outer zone of zircons dated; cores dated at 1155 +/-16 Ma; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Related igneous rocks; Age - Ma: 1,034; +10; -10; Dating method: U-Pb; Concentrate: zircon; Source rock: Zoned pegmatite (qtz-alb.) dyke; Formal name: Lyon Mtn. suite/ sample PL-PEG; Event dated: host rock; Interpretive comment: Pegmatite cuts leucogranitic gneiss of the suite; elsewhere postdates magnetite-rich zones in it; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72

Object dated: Related igneous rocks; Age - Ma: 1,026; +8; -8; Dating method: U-Pb; Concentrate: monazite; Source rock: Zoned pegmatite (qtz-alb.) dyke; Formal name: Lyon Mtn. suite/ sample PL-PEG; Event dated: host rock; Interpretive comment: The date is regarded as the time of monazite closure at ~ 725 degrees C.; Reference: McLelland, J.; Hamilton, M.; Selleck, B.; McLelland, J. M.; Orrell, S. ; Walker, D., 2000: Zircon U-Pb Geochronology of the Ottawan Orogeny, Adirondacks Highlands, New York: Regional and Tectonic Implications; Precambrian Research, Volume 109, p. 39 - 72
References:
McLelland, J.; Foose, M. P.; Morrison, J., 2001
Kiruna-type Low-Ti, Fe Oxide ores and Related Rocks, Adirondack Mountains, New York: High Temperature Hydrothermal Processes
in Proterozoic iron and zinc deposits of the Adirondack Mountains of New York and New Jersey Highlands (Part 1; Guide Book 35), Edited by Slack, J. F., Guide Book Series, Society of Economic Geologists, Society of Economic Geology, Inc., v. 35/pt.1, 110 p, p. 7 - 17

Postel, A. W., 1952
Geology of the Clinton County Magnetite District, New York
Professional Papers, United States Geological Survey, Publication code 237, 87 p., 3 maps.

Production data: Report period: from 1870 until 1975; 20 million long tons ore; Provisional entry?: no; Yearly or summary?: S
Grade-commodity information:Fe: 26 percent
Reference: McLelland, J. M; Slack, J. F.; deLorraine, W. F., 2001: Field Trip Day Two: Road Log for Lyon Mountain Iron Mine and Northwest Adirondack Mountains Geology; in Proterozoic iron and zinc deposits of the Adirondack Mountains of New York and New Jersey Highlands (Part 1; Guide Book 35), Edited by Slack, J. F., Guide Book Series, Society of Economic Geologists, Society of Economic Geology, Inc., v. 35/pt.1, 110 p, p. 19 - 22
Percent weights allocated to camp: 25.0%
Associated deposit(s): Chateaugay (576), '81' mine (577), Phillips vein (578), Parkhurst mine (579)

Generated 2015-03-03 11:24:48 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada