 | Giuliani, Gaston, Groat, Lee, Fallick, Anthony, Pignatelli, Isabella, Pardieu, Vincent (2020) Ruby Deposits: A Review and Geological Classification. Minerals, 10 (7) 597 doi:10.3390/min10070597 | Journal (article/letter/editorial) | | of formation: (Type I) magmatic-related and (Type II) metamorphic-related. Type I is characterized by...magmatic) origin are hosted by alkali basalts (Madagascar and others), and Type IB corresponding to xenocrysts...in kimberlite (Democratic Republic of Congo). Type II also has two sub-types; metamorphic deposits sensu...rubies from the recently discovered Didy mine in Madagascar also command high prices [19]. A set of eight...Ambohimandrosoa, Antsirabe area, cm2.1 × 1.3 andcm 1.7×cm 1 cm × 11.7cm) Antsirabe area, Madagascar. Collection: |  | | Book | | and kimberlite (IB) hosts. Metamorphic rocks (Type II) are subdivided into Metamorphic, sensu stricto,...Tanzania; Andilamena/Zahmena and Ampanihy/Toliara, Madagascar. Marble-ruby types included various deposits...sapphire deposits included Andilamena and Andrebabe, Madagascar; various Mogo Gem Tract sites, Myanmar; Elahera...Namehaca, Mozambique and Ampanihy and Zahmena, Madagascar. In contrast, Appaluttoq ruby, Greenland, 4...of formation: (Type I) magmatic-related and (Type II) metamorphic-related. Type I is characterized by |  | Graham, Ian, Sutherland, Lin, Zaw, Khin, Nechaev, Victor, Khanchuk, Alexander (2008) Advances in our understanding of the gem corundum deposits of the West Pacific continental margins intraplate basaltic fields. Ore Geology Reviews, 34 (1) 200-215 doi:10.1016/j.oregeorev.2008.04.006 | Journal (article/letter/editorial) | | sapphirine met. ruby High-Al diopside, pyrope, meionite, anatase mag.? sapphire Nepheline, anorthoclase...blue sapphires from non-basaltic fields (Ilakaka, Madagascar; Ratnapura, Sri Lanka; Mogok, Myanmar) to those...isotope systematics of gem corundum deposits in Madagascar: relevance for their geological origin. Mineralium...alkali feldspar xenocrysts in basaltic terranes. II. Geochemical and petrogenetic considerations. Canadian...Rakotosamizanany, S., 2003. Les gisements de rubis de Soamiakatra: caracteres mineralogiques – gemmologiques – |  | | Journal (article/letter/editorial) | | scapolite Mariposite Martite Matildite Maucherite Meionite scapolite Melanterite Meneghinite Mercury native...sediments but rarely in volcanic rocks e.g., Cobalt district of Ontario, Canada, Wittichen, Richelsdorf, Bieber...Jachymov, Czech Republic, Black Hawk District, USA, Batopilas District, Mexico (Fig. 04.01). These vein-type...gemological products (Fig. 04.10). In the Marlborough district of Queensland, Australia, it occurs within the...Complexes, USA, and the Russian NoriĺskTalnakh District (Cabri and Traill, 1966). 4a A: As an example | | | Journal (article/letter/editorial) | | scapolite Mariposite Martite Matildite Maucherite Meionite scapolite Melanterite Meneghinite Mercury native...sediments but rarely in volcanic rocks e.g., Cobalt district of Ontario, Canada, Wittichen, Richelsdorf, Bieber...Jachymov, Czech Republic, Black Hawk District, USA, Batopilas District, Mexico (Fig. 04.01). These vein-type...gemological products (Fig. 04.10). In the Marlborough district of Queensland, Australia, it occurs within the...Complexes, USA, and the Russian NoriĺskTalnakh District (Cabri and Traill, 1966). 4a A: As an example |
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