Taaffeite group
Tacharanite
Taenite
Taikanite
Takanawaite-(Y)
Takanelite
Takedaite
Talc
Talc/Chlorite interstratified mineral
Talmessite
Talnakhite
Tamaite
Tamarugite
Tamuraite
Taneyamalite
Tanohataite
Tantalite series
Tantalite-(Fe)
Tantalite-(Mn)
Taramite
Taranakite
Tausonite
Teallite
Teineite
Television stone
Tellurantimony
Tellurite
Tellurium
Tellurobismuthite
Telluropalladinite
Tengerite-(Y)
Tennantite
Tennantite-(Cu)
Tennantite-(Fe)
Tennantite-(Zn)
Tennantite series
Tenorite
Tephroite
Tetra-auricupride
Tetradymite
Tetraferroplatinum
Tetrahedrite
Tetrahedrite-(Fe)
Tetrahedrite-(Mn)
Tetrahedrite-(Zn)
Tetrahedrite group
Tetrahedrite series
Tetranatrolite
Thalénite-(Y)
, Thalenite-(Y)
Thaumasite
Theisite
Thénardite
, Thenardite
Theophrastite
Thiospinel group
Thomsonite series
Thomsonite-Ca
Thomsonite-Sr
Thorianite
Thorite
Thorogummite
Thortveitite
Thucholite
Thulite
Thuringite
Tilleyite
Tinticite
Tintinaite
Tinzenite
Tiragalloite
Tirodite
Titanaugite
Titanite
Titanomaghemite
Tobelite
Tobermorite
Tobermorite group
Tobermorite supergroup
Tochilinite
Todorokite
Tokyoite
Tolovkite
Tomamaeite
Topaz
Torbernite
Törnebohmite-(Ce)
, Tornebohmite-(Ce)
Törnroosite
, Tornroosite
Torryweiserite
Tosalite
Tosudite
Tourmaline supergroup
Toyohaite
Treasurite
Tremolite
, Trémolite
Trichalcite
Tridymite
Trilithionite
Triphylite
Triplite
Triploidite
Tripuhyite
Troilite
Trolleite
Trona
True mica group
Truscottite
Tschermakite
Tschermigite
Tsilaisite
Tsugaruite
Tsumebite
Tsumoite
Tučekite
, Tucekite
Tugarinovite
Tulameenite
Tungstite
Turquoise
TV stone
Tweddillite
Tyrolite
Tyrrellite subgroup
Tyuyamunite