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Quebec, Canada. The rock of Salem, Massachusetts, United States, is a mica-foyaite rich in albite and aegirine: it accompanies granite and essexite. Litchfieldite...18 KB (2,131 words) - 15:06, 22 April 2023
typically include ijolite, melteigite, teschenite, lamprophyres, phonolite, foyaite, shonkinite, silica undersaturated foid-bearing pyroxenite (essexite),...19 KB (2,085 words) - 11:20, 16 June 2024
Gorringe Bank. The inselberg is formed primarily of nepheline-syenites (foyaite, for which 'Foia' is the type locality). At c.63 km2 Monchique the fourth...5 KB (512 words) - 08:45, 29 June 2021
Oblast', Northern Region, in an aegerine-natrolite-microcline vein in foyaite, associated with aegirine, anatase, ancylite-(Ce), barylite, catapleiite...19 KB (1,826 words) - 20:22, 9 January 2024- in Brazil, with Special Reference to the Association of Phonolite and Foyaite". Quarterly Journal of the Geological Society. 43 (1–4). London: 457–473...7 KB (682 words) - 21:40, 2 August 2024
- after the part of Portugal where they can be found. foyaite (countable and uncountable, plural foyaites) (mineralogy) A K-feldspar-nepheline syenite mineral
- where it occurs (Ditro). Pyroxene-foyaite has been described also from Pouzac in the Pyrenees (S. France). Mica-foyaite is not very common, but is known