Embedded Files
Magmatic vs. metamorphic corundum discrimination: a new exception
Belley, Onodenalore, Abdale, Groat, & Fayek (2025) Chemical discrimination of magmatic vs. metamorphic blue corundum: the problem of corundum formed in partial melt and its implications for sapphire exploration and deposit modeling. Lithos. Link to Article
Discovery of the sapphire source rock at Rock Creek, Montana!
Belley & Broders (2025) A significant gem corundum deposit in rhyolitic ignimbrite: the enigmatic Rock Creek sapphire deposit, Montana, USA. Mineralium Deposita. Link to Article
< Image: Heavy minerals separated from rhyolite tuff.
Amethyst genesis and inclusions, La Manche, NF, Canada
Maloney, Belley & Conliffe (2024) Amethyst from Newfoundland, Canada: Geology, internal features, and fluid inclusion microthermometry. Gems & Gemology 60(3), 348-367. Link to Article
Cobalt-blue spinel from Canada + spinel chemical discrimination
Belley, Schollenbruch, Groat & Wilson (2024) Cobalt-blue spinel from Baffin Island, Canada: Comparison to other Mg-Al spinels and a chemical discrimination approach for the colouration of spinel. Journal of Gemmology 39(3), 168-188. Link to Issue
Cr-Ni-bearing corundum in Ni-sulfide ore
Belley, Onodenalore & Bleeker (2024) Corundum in sulfide ore at the Thompson Mine, Manitoba, Canada: An unusual occurrence of Cr- and Ni-bearing corundum. Canadian Journal of Mineralogy and Petrology, Vol. 62, 479-488. Link to Article
Microperthitic star orthoclase from Canada
Belley & Lake (2023) Microperthitic star orthoclase from Quebec, Canada. Journal of Gemmology, Vol. 38, issue 8 - Link to issue
Gem cordierite from Thor-Odin dome, BC, Canada
Belley (2023) Gem-quality cordierite (iolite) from the Thor-Odin dome, British Columbia, Canada: Geology, chemical composition, inclusions, and cause of chatoyancy. Gems & Gemology - Link to Article
End-member oxy-dravite from Beluga sapphire deposit
Skřápková, Cempírek, Belley, Groat & Škoda (2023) Physical properties and structure of near end-member oxy-dravite from the Beluga occurrence (Nunavut territory, Canada). Mineralogical Magazine - Link to Article
Corundum characterization in gem placers & other sediments
Belley (2023) A method for detrital corundum characterization in sediments: Case study of the Gem Mountain Mine placer sapphire deposit (Rock Creek, Montana, USA). The Canadian Journal of Mineralogy and Petrology 61, 61-85. - Link to Article
Corundum genesis at the Blue Jay occurrence, BC, Canada
Abdale, Belley, Groat, Cempirek, Skoda & Wall (2023) Corundum genesis at the Blue Jay Sapphire occurrence (British Columbia, Canada) as a record of metamorphism and partial melting in the Monashee Complex. Lithos - Link to Article
New variety of purple gem spinel
Belley & Palke (2021) Purple gem spinel from Vietnam and Afghanistan: Comparison of trace element chemistry, cause of color, and inclusions. Gems & Gemology 57, 228-238. - Link to Article
UAV exploration for peridot
Belley, Shang & Lake (2020) Gem exploration using a camera drone and geospatial analysis: A case study of peridot exploration in British Columbia, Canada. Journal of Gemmology - Link to Article
Gem genesis in metacarbonates (Nunavut)
Belley & Groat (2020) Metamorphosed carbonate platforms and controls on the genesis of sapphire, gem spinel, and lapis lazuli: Insight from the Lake Harbour Group, Nunavut, Canada and implications for gem exploration. Ore Geology Reviews - Link to Article
Gem spinel genesis (Nunavut)
Belley & Groat (2019) Metacarbonate-hosted spinel on Baffin Island, Nunavut, Canada: Insights into the origin of gem spinel deposits and cobalt-blue spinel. Canadian Mineralogist - Link to Article
New sapphire deposit model (Nunavut)
Belley, Dzikowski, Fagan, Cempirek, Groat, Mortensen, Fayek, Giuliani, Fallick & Gertzbein (2017) Origin of scapolite-hosted sapphire (corundum) near Kimmirut, Baffin Island, Nunavut, Canada. Canadian Mineralogist - Link to Article
Page updated
Google Sites
Report abuse