WebHet mineraal paragoniet is een natrium-aluminium-fylosilicaat met de chemische formule NaAl 3 Si 3 O 10 (OH) 2. Het behoort tot de micagroep. Eigenschappen. Het doorzichtige … WebAluminoceladonite is a low-temperature potassium dioctahedral mica mineral which is an end-member in the illite-aluminoceladonite solid solution series. The chemical formula for aluminoceladonite is K(Mg,Fe 2+)Al(Si 4 O 10)(OH) 2.. Occurrence. Aluminoceladonite is often referred to as a rare mineral, though its actual abundance may be underestimated …
Triassic paragonite- and garnet-bearing epidote-amphibolite from …
WebParagonite- and garnet-bearing high-grade epidote-amphibolite (PGEA) in the Ise area of the Hida Mountains, Japan is characterized by the high-pressure (HP) epidote-amphibolite facies parageneses (M 1), garnet + hornblende + clinozoisite + paragonite + quartz + rutile.Paragonite and garnet of the peak M 1 stage are locally replaced by retrograde … WebNov 1, 1994 · Chemical data for 139 natural paragonite-muscovite (Pg-Ms) pairs illustrate the effects of ferromagnesian components on the P-T-X topology of the Pg-Ms solvus. The pairs were selected on the basis of: reasonably accurate knowledge of the P-T conditions of formation; evidence for close approach to equilibrium at peak metamorphic conditions; … fastmed in asheville nc
Paragonite definition and meaning Collins English Dictionary
WebAug 1, 1993 · Metastable intermediate sodium potassium mica (Mu 47 Pa 52 Ma 1) is intergrown with paragonite (Mu 6 Pa 91 Ma 3) and muscovite (Mu 88 Pa 12), forming aggregates of randomly oriented crystals in the margin of the Ordovician Caradoc metabasites, northern Wales.The cross sections of the mica aggregates resemble the … Webparagonite: [noun] a mica NaAl3Si3O10(OH)2 corresponding to muscovite but with sodium instead of potassium. WebApr 7, 2024 · White mica is a finely-grained (coarse) version of any of the silicate minerals i.e.— muscovite, paragonite, or talc. White mica denotes a group of dioctahedral sheet silicates that are usually formed in low-grade metamorphic and hydrothermally reworked rocks. This substitution results in white mica in addition to compositions transitional ... fastmed inc