CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit group number Country Location Names Commodities
34 Canada (Nunavut) 68.25.49 N -- 082.48.35 W East Melville Iron Deposits; Roche Bay Fe
 
Database name: Canadian Iron Formation
Custodial agency: Geological Survey of Canada
Compilers: G. A. Gross and E. M. Hillary
Release date: 2014-08-21
   
Deposit group name(s): East Melville Iron Deposits (occurrence group); Roche Bay (occurrence group)
Political location(s): Canada; Province or state: Nunavut; Subprovince or locality: Melville Peninsula
NTS map data: 047A06 (Roche Bay)
Deposit clan (type): iron formation
Deposit (sub) types: Algoma type; Reference: Underhill, D. H., 1970: Report on the 1970 Mineral Exploration Program, Melville Peninsula (060744); Mineral Assessment Report, Borealis Exploration Ltd; UnderhillDH (Norman H. Ursel Associates Ltd) (operator), Indian and Northern Affairs Canada, Publication code 060744
Deposit group status: developed prospect; Size category: significant; Status comments: Reserves were esrtimated by using surface areas determined by planimeter, 0.29 cubic m per long ton, and a depth to width ratio of 2:1 up to a maximum of 488 m (1600 ft).
Geologic province: Canadian Shield
Geologic subprovince: Rae craton
Commodities: Fe
Mineralization styles: stratiform (wall rock); layered/banded (mineralization zone); stratiform (mineralization zone)
Geological ages: Archean (mineralization)
Archean (host rocks)
Host rocks: (1) sedimentary; iron formation; Depositional setting: shallow marine; Metamorphic grade: amphibolite - lower
External host rock forms:tabular sedimentary body
Internal host rock structures:massive
Country rocks: (1) banded iron formation; Metamorphic grade: amphibolite
Country rock protoliths:Iron Formation

(2) granite; Metamorphic grade: unknown
Individual lithologies:granitoid

(3) quartzite; Metamorphic grade: amphibolite
Country rock protoliths:sandstone
Individual lithologies:quartzite

(4) metavolcanics; Metamorphic grade: amphibolite - lower
Country rock protoliths:mafic-ultramafic suite
Individual lithologies:schist (quartz-biotite)
schist (garnet-biotite)
Metallogenic signatures: Fe
Mineralogy: (mineralization - massive / mineralization zone): magnetite, hematite, quartz
Qualified comments: (Applies to: reserve/resource descriptions) Combined estimated historical tonnage of Eastern Melville Peninsula iron deposits is 1,139 million long tons.

(Applies to: reserve/resource assays) By old estimates, the eastern deposits grade 23 to 34 % soluble Fe and 20 to 33 % magnetic Fe.
References:
Anonymous Editor(s)), 1980
Non-hydrocarbon Mineral Resource Potential of Part of Northern Canada
Open File, Geological Survey of Canada, Geological Survey of Canada, 716, 376 p., 2 maps.

Anonymous, 1982
Preliminary Feasibility Study, Borealis Roche Bay Magnetite Project (062133)
Mineral Assessment Report, Borealis Exploration Ltd; Scott-Ortech Mining Ltd (operator), Indian and Northern Affairs Canada, Publication code 062133

Dorval, A.; Palmer, P.; Macdonald, G. S.; Hoos, R. A. W., 2010
Ni 43-101 Preliminary Economic Assessment Report for the Roche Bay Project, Nunavut, Canada
NI 43-101 Technical Report, Met-Chem Canada Inc., Advanced Explorations Inc., Publication code 29053-2, 161 p.

Palmer, P., 2007
Technical Report on Roche Bay Magnetite Project for Advanced Explorations Inc., February 14, 2007
SEDAR, February 14, 2007, Internet

Scruggs, G. G., 1977
Geology and Research of all Borealis Claims, Melville Peninsula (080645)
Mineral Assessment Report, Borealis Exploration Ltd, Indian and Northern Affairs Canada, Publication code 080645

Underhill, D. H., 1970
Report on the 1970 Mineral Exploration Program, Melville Peninsula (060744)
Mineral Assessment Report, Borealis Exploration Ltd; UnderhillDH (Norman H. Ursel Associates Ltd) (operator), Indian and Northern Affairs Canada, Publication code 060744

Associated deposit(s): Area 'E' (20039), Roche Bay - Zone A (20045), Roche Bay - Zone B (20046), Roche Bay - Zone C (20047), Roche Bay - Zone D (20048)

Generated 2014-09-03 13:02:02 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
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