Phyllosilicates

Halloysite is a 1:1 aluminosilicate clay mineral with the empirical formula Al2Si2O5(OH)4.

Talc is a clay mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2.

Biotite is a common phyllosilicate mineral within the mica group, with the approximate chemical formula K(Mg,Fe)3AlSi3O10(OH)2.

The name apophyllite refers to a specific group of phyllosilicates, a class of minerals.

Chrysocolla is a hydrated copper phyllosilicate mineral with formula: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x<1) or (Cu,Al)2H2Si2O5(OH)4·nH2O.

Pyrophyllite is a phyllosilicate mineral composed of aluminium silicate hydroxide: Al2Si4O10(OH)2.

Ajoite is a hydrated sodium potassium copper aluminium silicate hydroxide mineral.

Sepiolite, also known as meerschaum (/ˈmɪərʃɔːm/ MEER-shawm or /ˈmɪərʃəm/ MEER-shəm, German for foam of the sea) is a soft white clay mineral, often used to make tobacco pipes (known as meerschaum pipes).

Kaolinite /ˈkeɪəlᵻˌnaɪt/ is a clay mineral, part of the group of industrial minerals, with the chemical composition Al2Si2O5(OH)4.

Ekanite is an uncommon mineral notable primarily as being among the very few gemstones that are naturally radioactive.

Okenite (CaSi2O5·2H2O) is a silicate mineral that is usually associated with zeolites.

Clay is a fine-grained natural rock or soil material that combines one or more clay minerals with traces of metal oxides and organic matter.

Phlogopite is a yellow, greenish, or reddish-brown member of the mica family of phyllosilicates.

Cavansite, whose name is derived from its chemical composition, calcium vanadium silicate, is a deep blue hydrous calcium vanadium phyllosilicate mineral, occurring as a secondary mineral in basaltic and andesitic rocks along with a variety of zeolite minerals.

The chlorites are a group of phyllosilicate minerals.

Lepidolite is a lilac-gray or rose-colored member of the mica group with formula K(Li,Al,Rb)3(Al,Si)4O10(F,OH)2.

Imogolite is an aluminium silicate clay mineral with formula: Al2SiO3(OH)4.

Annite is a phyllosilicate mineral in the mica family.

Apophyllite-(KF) or fluorapophyllite is a mineral of the apophyllite group, with the chemical formula of KCa4Si8O20(F,OH)·8(H2O).

Gyrolite (NaCa16Si23AlO6(OH)8·14H2O) is a silicate mineral that is usually associated with zeolites.

Kegelite is a complex silicate mineral with formula Pb8Al4Si8O20(SO4)2(CO3)4(OH)8.

Macaulayite is a red, earthy, monoclinic mineral, with the chemical formula (Fe3+, Al)24Si4O43(OH)2.

Magadiite is a hydrous sodium silicate mineral (NaSi7O13(OH)3·4(H2O)) which precipitates from alkali brines as an evaporite phase.

Minnesotaite is an iron silicate mineral with formula: (Fe2+,Mg)3Si4O10(OH)2.

Nelenite is a rare manganese iron phyllosilicate arsenate mineral found in Franklin Furnace, New Jersey.

Dickite (Al2Si2O5(OH)4) is a phyllosilicate clay mineral named after the metallurgical chemist Allan Brugh Dick, who first described it.

Caryopilite (synonymous with ectropite and ektropite) is a brown-colored mineral with formula (Mn2+,Mg)3Si2O5(OH)4.

Kampfite is a rare barium silicate–carbonate–halide mineral with formula: Ba12(Si11Al5)O31(CO3)8Cl5.

Stilpnomelane is a phyllosilicate mineral.

Searlesite is a sodium borosilicate mineral, with the chemical formula NaBSi2O5(OH)2.

Pentagonite is a rare silicate mineral with formula Ca(VO)Si4O10·4(H2O).

Carletonite is a rare silicate mineral with formula KNa4Ca4(CO3)4Si8O18(F,OH)·(H2O).

Sanbornite is a rare barium phyllosilicate mineral with formula BaSi2O5.

Hisingerite is an iron(III) phyllosilicate mineral with formula Fe3+2Si2O5(OH)4·2H2O.

Macdonaldite is a rare barium silicate mineral with a chemical formula of BaCa4Si16O36(OH)2·10H2O.

Cymrite is a silicate mineral with the chemical formula BaAl2Si2(O,OH)8·H2O.

Brammallite is a sodium rich analogue of illite.

Clintonite is a calcium magnesium aluminium phyllosilicate mineral.

Ephesite is a rare member of the mica silicate mineral group, phyllosilicate.

Franklinphilite is a phyllosilicate of the stilpnomelane group, found exclusively from the Franklin and Sterling Hill mines in Franklin, Sussex County, New Jersey.

Fraipontite is a zinc aluminium silicate mineral with a formula of (Zn,Al)3(Si,Al)2O5(OH)4.

Pimelite was discredited as a mineral species by the International Mineralogical Association (IMA) in 2006, in an article which suggests that “pimelite” specimens are probably willemseite (which is approved), or kerolite (which is also discredited).

Tuperssuatsiaite is a rare clay mineral found in Greenland, Namibia and Brazil.

Tumchaite, Na2(Zr,Sn)Si4O11•H2O, is a colorless to white monoclinic phyllosilicate mineral.

Ussingite is a silicate mineral with formula Na2AlSi3O8(OH).

Zussmanite (K(Fe2+,Mg,Mn)13[AlSi17O42](OH)14) is a hydrated iron-rich silicate mineral.

Greenalite is a mineral in the kaolinite-serpentine group with the chemical composition (Fe2+,Fe3+)2-3Si2O5OH4.

Chapmanite is a rare silicate mineral belonging to the nesosilicate group, discovered in 1924, and named in honour of the late Edward John Chapman (1821–1904), a geology professor at the University of Toronto.

Chamosite is the Fe2+end member of the chlorite group.

Neptunite is a silicate mineral with the formula KNa2Li(Fe2+, Mn2+)2Ti2Si8O24.

Allophane is an amorphous to poorly crystalline hydrous aluminium silicate clay mineraloid.