Ontario Mineral Catalog: G

gadolinite - (Ce), -(Y)
 
one xl of 100 grams found in pegmatite on lot 11, con.IX, Loughborough Twp., H.V. Ellsworth, 1932, GSC, Econ.Geol.Ser., 11, p.232
GAHNITE
A
Mattabi Mine, Sturgeon Lake, A.Sabina, G.S.C.Misc.Rep.49, 1991, p.165;
3 other localities in R.Traill, Cat.of Can.Mins., GSC Paper 80-18, 1983
GALENA  photo
AA
-52.5 kg pc from Enterprise Mine, 1876, Sabina 1991;
-fine cubes, octahedra from the Dundas Quarry, A.Sabina, 1986, GSC Misc.Report 39,p.143;
-octahedra to 6cm, O’Brien Mine, Cobalt district, Sabina, paper 73-13, p.40
GALENOBISMUTITE
A
-w. cosalite at Mondoux claim, McElroy Twp.;
-xls to 1 cm from the Siscoe Mine, Gowganda, W.Petru,, 1971, CM11,p.218
GALKHAITE
 
Hemlo Gold Deposits, A.Sabina, G.S.C.Misc.Rep.49, 1991, pp.86-89
GARRONITE Davis Hill and Khartoum districts; Velthuizen, R&M V66 #1 pp.44-45
GEDRITE
 
Tallan Lake Sill, Peterborough Co., CMV18#3pp.275-284
GEOCRONITE
 
-Taylor pit, Lot 13, Con. XIV, Huntingdon Twp., Hastings Co., Madoc; MRV13#2,pp.93-100, 1982;
-Hemlo Gold Deposits, A.Sabina, G.S.C.Misc.Rep.49, 1991, pp.86-89
GERSDORFFITE
A
-cubic xls to 5 cm, Temagami mine, Sabina, paper 73-13,p.12;
-Hemlo Gold Deposit, A.Sabina, G.S.C.Misc.Rep.49, 1991, pp.86-89;
-11 localities mentioned in R.Traill, Cat.of Can.Mins., GSC Paper 80-18, 1983
GIBBSITE
 
CMV26#2
GISMONDINE Davis Hill and Khartoum, Velthuizen, R&M V66 #1 pp.44-45
GLAUCODOT
 
Cobalt-Gowganda area, W.Petruk, D.Harris, J.Stewart, 1971, CM11, p.179
GLAUCONITE
 
3 limestone quarries, A.Sabina, 1986, GSC Misc.Report 39, green smears
gmelinite -(Ca), -(K), or -(Na) ?
 
Faraday Mine, Kennedy MRV10#3p158; Leach, 200 Mineral Localities in Southern Ontario, p.37
GODLEVSKITE
 
Texmont Mine, 50 km S of Timmins, CMV11#4pp879-885
GOETHITE
AA
-very fine brown botryoidal with calcite, pyrite, dolomite, Wawa iron mines, Sabina, 1991, GSC Misc.Rep.49,pp.80-82;
-Atikokan, Caland, & Steep Rock Mines, Atikokan, A.Sabina, G.S.C.Misc.Rep.49, 1991,pp.150-154
GOLD
AA
-Richardson Mine, near Eldorado, Madoc Twp, was the first discovery of gold in ON.
-70 localities in J. Satterly, OGS, MP 70, 1977
GOLDMANITE Hemlo; New Dana pp.1049-1050
GRAFTONITE
 
Conifer Road pegmatite, CMV36#2,pp.367-376
GRANDIDIERITE - Opinicon Lake, SE Ont.; Morton and Brewer's Mills; New Dana pp.116-117
GRAPHITE
AA
-superbly crystallized specimen from the Virginia Mine, Monmouth Twp., Haliburton Co, (world's best?) MR,V13 #2 p.76;
-very unusual spheres to ~10 mm from near Gooderham, micro spheres from sodalite vein along the York River, Bancroft
-15 localities mentioned in R.Traill, Cat.of Can.Mins., GSC Paper 80-18, 1983
GREENALITE - Gunflint Iron Formation, near Thunder Bay; CM V8#1, p.132     -Gunflint Lake and Belcher Island, Hudson Bay; New Dana, pp.1421-1422
GROSSULAR
AA
-fine druses and large singles, orange to brownish, to 5 cm, from the York River Skarn Zone, Bancroft; A.Sabina, 1986, GSC Misc.Report 39, pp.16-17
-similar xls from roadcut W of Coe Hill, MRV13 #2, p.75
- both grossular-andradite in  lighter colored, red-brown trapezohedra and andradite-grossular in large dark brown dodecahedra from Marmoraton Iron Mine, Marmora, analyzed by George Robinson, MRV13 #2, pp.73-75
GRUNERITE
 
-Moose Mountain Mine, Sudbury, A.Sabina, G.S.C.Misc.Rep.49, 1991, pp.19-21;
-Echo Twp., H.Armstrong, 1950, Ont.Dept.Mines, Ann.Rept., V59,pt.V, p.16
GUANGLINITE
 
- Coldwell complex, Marathon; CMV30#1, pp.121-136
GUDMUNDITE
 
-Hemlo Gold Deposits, A.Sabina, G.S.C.Misc.Rep.49, 1991, pp.86-89;
-Mulcahy Twp., 32 km W of Red Lake, L.Cabri, D.Harris, J.Stewart, CMV10p.232, 1970
GUETTARDITE
 
Taylor pit, Lot 13, Con. XIV, Huntingdon Twp., Hastings Co., Madoc; MRV13#2,pp.93-100, 1982
GUNNINGITE
 
Dundas Quarry, near Hamilton, A.Sabina, 1986, GSC Misc.Report 39, p.143
GYPSUM
A
-"large crystals" Madawaska/Faraday Mine, A.Sabina, 1986, GSC Misc.Report 39, pp.42-44;
-large clear to opaque masses & small xls from the Dundas Quarry, nr Hamilton
-large masses and small clear xls known from Caledonia Gypsum Mines, Caledonia (per.com. Ray Hill)

Key to the table:

Mineral names in:
CAPS = a valid Ontario mineral
no caps and italicized = valid but needs work to clarify chemistry; or invalid group name
? = a species that I'm not entirely sure of and could use verification.
UNDERLINED = first discovered in Ontario, clicking will take you to the Type Minerals section
photo = click to see a photograph
Quality ratings (Q):
no rankings = it has yet to be ranked, or specimens are insignicant - submicroscopic, massive, poor, etc.
A  = good specimens; at least either good micro crystals or unusually large masses
AA  = very fine or world-class specimens
Important: Mineral localities listed on this website are not necessarily open for collecting.  Those foolish enough to trespass on posted land or enter active mines without permission endanger themselves and may cause the permanant closure of that site.

 

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