Properties & Information
Spirit Quartz
Spirit QuartzSCIENCE / MINERALOGYSpirit Quartz, also called Cactus Quartz, is a quartz growth habit in which a larger central crystal is covered by a druse of many smaller quartz crystals....
Spirit Quartz
Spirit QuartzSCIENCE / MINERALOGYSpirit Quartz, also called Cactus Quartz, is a quartz growth habit in which a larger central crystal is covered by a druse of many smaller quartz crystals....
Spinel
SpinelSCIENCE / MINERALOGYSpinel is magnesium aluminum oxide, MgAl₂O₄, crystallizing in the cubic system. Gem spinel occurs in red, pink, blue, purple, orange, black, and colorless varieties.GEOLOGY & FORMATIONIt forms in...
Spinel
SpinelSCIENCE / MINERALOGYSpinel is magnesium aluminum oxide, MgAl₂O₄, crystallizing in the cubic system. Gem spinel occurs in red, pink, blue, purple, orange, black, and colorless varieties.GEOLOGY & FORMATIONIt forms in...
Spider Web Jasper
Spider Web JasperSCIENCE / MINERALOGYSpider Web Jasper is a commercial jasper name for opaque to translucent silica-rich rock composed largely of microcrystalline quartz/chalcedony with iron oxides, clays, feldspar, or other...
Spider Web Jasper
Spider Web JasperSCIENCE / MINERALOGYSpider Web Jasper is a commercial jasper name for opaque to translucent silica-rich rock composed largely of microcrystalline quartz/chalcedony with iron oxides, clays, feldspar, or other...
Sphalerite
SphaleriteSCIENCE / MINERALOGYSphalerite is zinc sulfide, ZnS, the principal ore mineral of zinc. It crystallizes in the cubic system and may be yellow, red, brown, black, green, or colorless with...
Sphalerite
SphaleriteSCIENCE / MINERALOGYSphalerite is zinc sulfide, ZnS, the principal ore mineral of zinc. It crystallizes in the cubic system and may be yellow, red, brown, black, green, or colorless with...
Spessartine Garnet
Spessartine GarnetSCIENCE / MINERALOGYSpessartine Garnet belongs to the garnet group of cubic silicate minerals. Garnet chemistry varies among species such as pyrope, almandine, spessartine, grossular, andradite, and uvarovite, so a...
Spessartine Garnet
Spessartine GarnetSCIENCE / MINERALOGYSpessartine Garnet belongs to the garnet group of cubic silicate minerals. Garnet chemistry varies among species such as pyrope, almandine, spessartine, grossular, andradite, and uvarovite, so a...
Specular Hematite
Specular HematiteSCIENCE / MINERALOGYSpecular Hematite is a glittering platy variety of hematite, Fe₂O₃, composed of reflective micaceous iron-oxide plates.GEOLOGY & FORMATIONIt forms in metamorphic iron formations, hydrothermal veins, and iron-rich...
Specular Hematite
Specular HematiteSCIENCE / MINERALOGYSpecular Hematite is a glittering platy variety of hematite, Fe₂O₃, composed of reflective micaceous iron-oxide plates.GEOLOGY & FORMATIONIt forms in metamorphic iron formations, hydrothermal veins, and iron-rich...