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SIMPSONITE

Simpsonite

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

Simpsonite

List of gemstones by species

Stichtite Shattuckite Shigaite Shortite Shungite Siderite Sillimanite Simpsonite Sinhalite Smaltite Smithsonite Sodalite Hackmanite (var.) Sogdianite Sperrylite

List of gemstones by species

List_of_gemstones_by_species

List of minerals

Siderotil Siegenite Silicate perovskite Sillimanite Native silver Simonellite Simpsonite Sincosite Sinkankasite Sinoite Skaergaardite Sklodowskite Skutterudite

List of minerals

List_of_minerals

List of mineral symbols

Simplotite Spo Štěpite Ště Svabite Sva Santabarbaraite Sbb Seidite-(Ce) Sei-Ce Simpsonite Spn Stercorite Stc Svanbergite Svb Santaclaraite Scl Seidozerite Sdz Sincosite

List of mineral symbols

List_of_mineral_symbols

Tanco Mine

Underground mine in Manitoba, Canada

pollucite, beryllium-containing beryl and tantalum- and niobium-containing simpsonite and tantalite. The pollucite (chemical formula (Cs,Na)2Al2Si4O12·2H2O)

Tanco Mine

Tanco_Mine

Oxide mineral

Class of minerals containing oxygen

medium-sized cations; sheets of edge-sharing octahedra: 05 Bahianite, 10 Simpsonite 04.DD With medium-sized cations; frameworks of edge-sharing octahedra:

Oxide mineral

Oxide_mineral

List of minerals named after people

Sillimanite: Al2SiO5 – American chemist Benjamin Silliman (1779–1864) Simpsonite: Al4(Ta,Nb)3O13(OH) – Australian mineralogist Edward Sydney Simpson (1875–1939)

List of minerals named after people

List_of_minerals_named_after_people

List of minerals recognized by the International Mineralogical Association (S)

[612] [613] [614] (IUPAC: calcium nonaoxotetravanadate(IV) pentahydrate) Simpsonite (Y: 1938) 4.DC.10 [615] [616] [617] (IUPAC: tetraluminium tritantalum

List of minerals recognized by the International Mineralogical Association (S)

List_of_minerals_recognized_by_the_International_Mineralogical_Association_(S)