Gageite

General Information: Chemical Formula:(Mn,Mg,Zn)42Si16O54(OH)40 Composition:(Molecular Weight = 3,958.95 gm)Magnesium 7.74 % MgManganese 34.97 % MnZinc 6.94 % ZnSilicon 11.35 % SiHydrogen 1.02 % H Oxygen 37.99 % O  Empirical Formula: Mn2+25.2Mg12.6Zn4.2Si16O54(OH)40 Environment:Metamorphosed zinc-manganese deposit. Locality:Franklin, Sussex Co., New Jersey, USA.Physical Properties: Color:colorless or pink. Density:3.41 Diaphaniety:Transparent Habits:Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Luster:Vitreous (Glassy) Streak:whiteMore details...

General Information: Chemical Formula:(Mn,Mg,Zn)42Si16O54(OH)40 Composition:(Molecular Weight = 3,958.95 gm)Magnesium 7.74 % MgManganese 34.97 % MnZinc 6.94 % ZnSilicon 11.35 % SiHydrogen 1.02 % H Oxygen 37.99 % O  Empirical Formula: Mn2+25.2Mg12.6Zn4.2Si16O54(OH)40 IMA Status:Approved IMA (Dana # Added)Physical Properties: Color:colorless or pink. Density:3.58 Diaphaniety:Transparent Habits:Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Acicular - Occurs as needle-like crystals., Luminescence:Non-fluorescent. Luster:Vitreous (Glassy)More details...