Mcgillite
Mcgillite is a rare, monoclinic, pseudohexagonal mineral of the Pyrosmalite group, with the formula Mn2+
8Si
6O
15(OH)
8Cl
2. It was first approved in 1979, and is named for McGill University.
Mcgillite is found in the Sullivan Mine, Kimberley, Kootenay district, British Columbia, Canada; the Kyurazawa mine, Tochigi Prefecture, Japan; and at one location in Romania. At the Sullivan mine, it forms as fracture fillings in a manganese-rich portion of quartzite and argillite within a metamorphosed lead-zinc deposit. It is pink in color.
References
- Handbook of Mineralogy
- DakotaMatrix entry
- Mindat.org entry
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Phyllosilicates
- Aluminoceladonite
- Anandite
- Annite
- Aspidolite
- Balestraite
- Bityite
- Biotite
- Boromuscovite
- Bramallite
- Celadonite
- Chernykhite
- Chromphyllite
- Clintonite
- Eastonite
- Ephesite
- Ferroaluminoceladonite
- Ferroceladonite
- Fluorannite
- Fluorokinoshitalite
- Fluorophlogopite
- Fluorotetraferriphlogopite
- Garmite
- Glauconite
- Gorbunovite
- Hendricksite
- Illite
- Kinoshitalite
- Lepidolite
- Luanshiweiite
- Manganiceladonite
- Margarite
- Masutomilite
- Montdorite
- Muscovite
- Nanpingite
- Norrishite
- Orlovite
- Oxyphlogopite
- Paragonite
- Phengite
- Phlogopite
- Polylithionite
- Preiswerkite
- Roscoelite
- Siderophyllite
- Suhailite
- Tainiolite
- Tetraferriannite
- Trilithionite
- Voloshinite
- Wonesite
- Yangzhumingite
- Minnesotaite
- Talc
- Willemseite
- Ferripyrophyllite
- Pyrophyllite
- Bismutoferrite
- Dickite
- Halloysite
- Hisingerite
- Kaolinite
- Nacrite
- Amesite
- Antigorite
- Berthierine
- Brindleyite
- Caryopilite
- Chrysotile
- Cronstedtite
- Fraipontite
- Greenalite
- Guidottiite
- Kellyite
- Lizardite
- Manandonite
- Népouite
- Odinite
- Pecoraite
- Beidellite
- Ferrosaponite
- Montmorillonite
- Nontronite
- Saponite
- Sauconite
- Swinefordite
- Vermiculite
- Volkonskoite
- Yakhontovite
- Allophane
- Chrysocolla
- Imogolite
- Neotocite
- Falcondoite
- Ferrisepiolite
- Sepiolite
- Friedelite
- Mcgillite
- Nelenite
- Pyrosmalite
- Schallerite
- Bannisterite
- Franklinphilite
- Lennilenapeite
- Parsettensite
- Stilpnomelane
- Structural groups mainly; based on rruff.info/ima, modified
- Minerals portal