feldspars
Common crusite components
Feldspars are a group of aluminum silicate minerals that make up roughly half of Earth's crust—the most abundant mineral family on the planet.
They occur in most igneous and metamorphic rocks, appearing as crystalline masses ranging from white to pink to gray.
Feldspars are essential raw materials in ceramics and glassmaking: Theite contains quartz and feldspars.
Iridescent feldspar mineral
- amazoniteGreen microcline variety
- moonstoneIridescent feldspar gemstone
- sunstoneReflective inclusion-bearing feldspar
- bariumSoft silvery alkaline element
potassium · sodium · calcium · classification
Igneous rock, quartz-rich
- basaltFine-grained volcanic stone
- gneissFoliated metamorphic rock
- rhyolitePale volcanic igneous rock
- gabbroDark intrusive igneous rock
diorite · igneous · metamorphic · plutonic · volcanic · weathering · clay · outcrop
Forming identical pairs
- cleavageTendency to split cleanly
- latticeOpenwork of crossed strips
- prismaticLight-dispersing, multicolored
- habitSettled regular tendency
symmetry · lamellae · angle · optical · extinction
labradorite
Iridescent feldspar mineral
- amazoniteGreen microcline variety
- moonstoneIridescent feldspar gemstone
- sunstoneReflective inclusion-bearing feldspar
barium · potassium · sodium · calcium · classification
granite
Igneous rock, quartz-rich
gabbro · diorite · igneous · metamorphic · plutonic · volcanic · weathering · clay · outcrop · quarry
twinning
Forming identical pairs
porcelain
Translucent fired clay
vitrification · firing · kiln · clay · kaolin · body · stoneware · earthenware · sintering · melt
framework
Underlying support system
silica · alumina · potash · soda · lime · alkali · calcic · sodic · ternary · diagram
feldsparsquartz
Crystalline silicon dioxide
olivine · carbonates · micas · calcite · oxides
feldsparsrare earth minerals
Scarce metallic elements underground
trace minerals · diamond · zircon · apatite · beryl
- potassium feldsparAlkali aluminum silicate mineral