T

Tachanarite

Talc

Talmessite

Tangdanite

Taniajacoite

Tanzanite

Tarbuttite

Tellurite

Tellurium

Tennantite

Tenorite

Terskite

Teruelite

Tetrahedrite

Thaumasite

Theisite

Thomsenolite

Thomsonite

Thorianite

Thorikosite

Thorite

Tinzenite

Titanite

Tobermorite

Todorokite

Tooeleite

Topaz

Topazolite (Garnet Group)

Torbernite

Tourmaline

Trevorite

Tridymite

Triploidite

Tripuhyite

Truscottite

Tschernichite

Tschörtnerite

Tsumcorite

Tučekite

Tunellite

Tungstenite

Tungstibite

Tunisite

Tuperssuatsiaite

Turquoise

Tuscanite

Tvrdyite

Tyuyamunite

Tyrolite