IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Hemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, Canada

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 48° 41' 40'' North , 85° 54' 39'' West
Latitude & Longitude (decimal): 48.69444,-85.91083
GeoHash:G#: f0dvj099s
Locality type:Deposit
Köppen climate type:Dfb : Warm-summer humid continental climate


Model genesis of Hemlo include premetamorphie porphyry mineralization, syn- to postmetamorphic shear zone-related mineralization, and postmetamorphic multistage replacement mineralization. Large gold deposit.


Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

Actinolite

Aktashite

Albite

Allanite-(Ce)

Allanite-(La)

Almandine

Altaite

'Amphibole Supergroup'

Andalusite

Anhydrite

Anthophyllite

Antimony

'Apatite'

'Apophyllite'

Armenite

Arsenic

Arsenopyrite

Aurostibite

Baryte

Baumhauerite

Berthierite

'Biotite'

Bornite

Boulangerite

Bournonite

Breithauptite

Brochantite

Cafarsite

Calaverite

Calcite

Chalcocite

Chalcopyrite

Chalcostibite

'Chlorite Group'

Chromite

Cinnabar

Clausthalite

Clinozoisite

Coloradoite

Copper

Cordierite

Covellite

Criddleite (TL)

Crocoite

Cubanite

Diopside

Dolomite

Dufrénoysite

Epidote

'Fayalite-Forsterite Series'

'Feldspar Group'

Ferberite

Ferro-tschermakite

Fluorite

Galena

Galkhaite

'Garnet Group'

Geocronite

Gersdorffite

Gold

Graphite

Grossular

Gudmundite

Gypsum

Hematite

Hemloite (TL)

'Hornblende'

Hydroxycalcioroméite

Ilmenite

Jamesonite

Kermesite

Kyanite

Laumontite

Magnetite

Melonite

Microcline

Molybdenite

Monazite-(Ce)

Muscovite

var: Fuchsite

var: Sericite

Orpiment

Orthoclase

Pääkkönenite

Parapierrotite

Pararealgar

Perovskite

Phlogopite

Poppiite

Prehnite

'Pumpellyite'

Pumpellyite-(Mg)

Pyrite

Pyrrhotite

Quartz

Realgar

Routhierite

Rutile

'Scapolite'

Scheelite

Seligmannite

'Serpentine Subgroup'

Sillimanite

Silver

Sphalerite

Staurolite

Stibarsen

Stibnite

Stilbite-Ca

Talc

Tennantite

Tetrahedrite

Titanite

Tomichite

'Tourmaline'

Tremolite

Tvalchrelidzeite

Twinnite

Ullmannite

Vaughanite (TL)

Vesuvianite

Voltaite

'Wolframite'

Wurtzite

Zinkenite

Zircon

Zoisite


111 valid minerals. 3 (TL) - type locality of valid minerals.

Geochronology

Mineralization age: Archean : 2816 Ma to 2578 ± 3 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Precambrian
 Archean
  Neoarchean
ⓘ Titanite (youngest age)2578 ± 3 Ma
ⓘ Rutile (youngest age)2599 Ma
ⓘ Zircon (youngest age)2632 Ma
ⓘ Molybdenite2640 Ma
ⓘ Rutile (oldest age)2665 Ma
ⓘ Apatite2672 Ma
ⓘ Titanite (oldest age)2689 Ma
  Mesoarchean
ⓘ Zircon (oldest age)2816 Ma

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 624808
Metasedimentary rocks

Age: Archean (2500 - 3200 Ma)

Comments: Superior Province

Lithology: Wacke, siltstone, arkose or argillite (from lowlands)

Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. [1]

Neoarchean
2500 - 2800 Ma



ID: 3187875
Archean sedimentary and volcanic rocks

Age: Neoarchean (2500 - 2800 Ma)

Comments: Superior Province

Lithology: Intermediate volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region
Show map

Canada

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
HARRIS, D.C., ROBERTS, A.C., LAFLAMME, J.H.G. & STANLEY, C.J. (1988): Criddleite, TlAg2Au3Sb10S10, a new gold-bearing mineral from Hemlo, Ontario, Canada. Mineralogical Magazine 52, 691-697.
HARRIS, D.C. (1989): The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geological Survey of Canada, Economic Geology Report 38.
Pan, Y. and Fleet, M. (1991) Vanadian allanite-(La) and vanadian allanite-(Ce) from the Hemlo gold deposit, Ontario, Canada. Mineralogical Magazine: 55: 497-507.
Pan, Y. and Fleet, M. (1992a) Mineral chemistry and geochemistry of vanadian silicates in the Hemlo gold deposit Ontario, Canada. Contributions to Mineralogy and Petrology: 109: 511-525.
Pan, Y. and Fleet, M. (1992b) Vanadium-rich minerals of the pumpellyite group from the Hemlo gold deposit, Ontario. Canadian Mineralogist: 30: 153-162.
Pan, Y. and Fleet, M. (1992c) Calc-silicate alteration in the hemlo gold deposit, Ontario: mineral assemblages, P-T-X co nstraints and significance. Economic Geology: 87: 1104-1120.
Pan, Y., Fleet, M.E., and MacRae, N.D. (1993) Oriented monazite inclusions in apatite porphyroblasts from the Hemo gold deposit, Ontario, Canada. Mineralogical Magazine: 57: 697-707.
Pan, Y., Fleet, M.E., and Ray, G.E. (1994a) Scapolite in two Canadian gold deposits: Nickel Plate, British Columbia and Hemlo, Ontario. Canadian Mineralogist: 32: 825-837.
Pan, Y. and Fleet, M.E. (1995) The Late Archean Hemlo gold deposit, Ontario, Canada: a review and synthesis. Ore Geology Review: 9: 455-488.
Fleet, M.E., Seller, M.H., and Pan, Y. (1997) Rare earth elements, protoliths and alteration at the Hemlo gold deposit, Ontario, Canada, and comparison with argillic and sericitic alteration in the Highland Valley porphyry district, British Columbia, Canada. Economic Geology: 92: 551-568.
Powell, W. G., & Pattison, D. R. (1997). An exsolution origin for low-temperature sulfides at the Hemlo gold deposit, Ontario, Canada. Economic Geology, 92(5), 569-577.

External Links


Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 15, 2018 00:34:57 Page generated: June 19, 2018 11:21:48
Go to top of page