Properties & Information
Natrolite
NatroliteSCIENCE / MINERALOGYNatrolite is a sodium zeolite, Na₂Al₂Si₃O₁₀·2H₂O, that crystallizes in the orthorhombic system. It commonly forms slender colorless, white, cream, or pale needle-like crystals in radiating sprays.GEOLOGY & FORMATIONIt...
Natrolite
NatroliteSCIENCE / MINERALOGYNatrolite is a sodium zeolite, Na₂Al₂Si₃O₁₀·2H₂O, that crystallizes in the orthorhombic system. It commonly forms slender colorless, white, cream, or pale needle-like crystals in radiating sprays.GEOLOGY & FORMATIONIt...
Namibian Black Tourmaline
Namibian Black TourmalineSCIENCE / MINERALOGYNamibian Black Tourmaline is a locality trade term for black tourmaline, usually schorl, from Namibia. Schorl is an iron-rich borosilicate tourmaline that forms deeply striated trigonal...
Namibian Black Tourmaline
Namibian Black TourmalineSCIENCE / MINERALOGYNamibian Black Tourmaline is a locality trade term for black tourmaline, usually schorl, from Namibia. Schorl is an iron-rich borosilicate tourmaline that forms deeply striated trigonal...
Muscovite
MuscoviteSCIENCE / MINERALOGYMuscovite is a potassium aluminum mica, KAl₂(AlSi₃O₁₀)(OH)₂, characterized by perfect basal cleavage into thin elastic sheets. It occurs in colorless, silver, pale green, pink, brown, and other light...
Muscovite
MuscoviteSCIENCE / MINERALOGYMuscovite is a potassium aluminum mica, KAl₂(AlSi₃O₁₀)(OH)₂, characterized by perfect basal cleavage into thin elastic sheets. It occurs in colorless, silver, pale green, pink, brown, and other light...
Mugglestone
MugglestoneSCIENCE / MINERALOGYMugglestone is a trade name for a banded iron-rich lapidary rock closely related to tiger iron, commonly combining red jasper, hematite/magnetite, and chatoyant tiger-eye-like quartz.GEOLOGY & FORMATIONIt forms...
Mugglestone
MugglestoneSCIENCE / MINERALOGYMugglestone is a trade name for a banded iron-rich lapidary rock closely related to tiger iron, commonly combining red jasper, hematite/magnetite, and chatoyant tiger-eye-like quartz.GEOLOGY & FORMATIONIt forms...
Mottramite
MottramiteSCIENCE / MINERALOGYMottramite is a lead-copper vanadate hydroxide mineral, PbCu(VO₄)(OH), in the descloizite group. It usually occurs as olive-green, brown, blackish, botryoidal, crust-like, or tiny crystalline material.GEOLOGY & FORMATIONIt is...
Mottramite
MottramiteSCIENCE / MINERALOGYMottramite is a lead-copper vanadate hydroxide mineral, PbCu(VO₄)(OH), in the descloizite group. It usually occurs as olive-green, brown, blackish, botryoidal, crust-like, or tiny crystalline material.GEOLOGY & FORMATIONIt is...
Morganite
MorganiteSCIENCE / MINERALOGYMorganite is the pink to peach gem variety of beryl, Be₃Al₂Si₆O₁₈. Manganese is the principal color-producing element, and crystals form in the hexagonal system.GEOLOGY & FORMATIONIt crystallizes mainly...
Morganite
MorganiteSCIENCE / MINERALOGYMorganite is the pink to peach gem variety of beryl, Be₃Al₂Si₆O₁₈. Manganese is the principal color-producing element, and crystals form in the hexagonal system.GEOLOGY & FORMATIONIt crystallizes mainly...