Simpsonite has a general formula of Al4(Ta,Nb)3O13(OH). It occurs as euhedral to subhedral tabular to short and prismatic crystals, commonly in subparallel...
3 KB (181 words) - 13:34, 23 June 2024
Stichtite Shattuckite Shigaite Shortite Shungite Siderite Sillimanite Simpsonite Sinhalite Smaltite Smithsonite Sodalite Hackmanite (var.) Sogdianite Sperrylite...
13 KB (867 words) - 01:34, 24 August 2024
Siegenite Silicate perovskite Silicon Sillimanite Silver Simonellite Simpsonite Sincosite Sinkankasite Sinoite Skaergaardite Sklodowskite Skutterudite...
42 KB (2,782 words) - 13:51, 17 September 2024
Simplotite Spo Štěpite Ště Svabite Sva Santabarbaraite Sbb Seidite-(Ce) Sei-Ce Simpsonite Spn Stercorite Stc Svanbergite Svb Santaclaraite Scl Seidozerite Sdz Sincosite...
180 KB (418 words) - 05:15, 30 June 2024
medium-sized cations; sheets of edge-sharing octahedra: 05 Bahianite, 10 Simpsonite 04.DD With medium-sized cations; frameworks of edge-sharing octahedra:...
18 KB (1,957 words) - 19:53, 9 July 2024
pollucite, beryllium-containing beryl and tantalum- and niobium-containing simpsonite and tantalite. The pollucite (chemical formula (Cs,Na)2Al2Si4O12·2H2O)...
7 KB (615 words) - 22:17, 18 September 2024
[612] [613] [614] (IUPAC: calcium nonaoxotetravanadate(IV) pentahydrate) Simpsonite (Y: 1938) 4.DC.10 [615] [616] [617] (IUPAC: tetraluminium tritantalum...
103 KB (6,878 words) - 17:47, 9 February 2024
Sillimanite: Al2SiO5 – American chemist Benjamin Silliman (1779–1864) Simpsonite: Al4(Ta,Nb)3O13(OH) – Australian mineralogist Edward Sydney Simpson (1875–1939)...
57 KB (5,326 words) - 10:17, 26 July 2024