Orthoclase

Orthoclase

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Uses
Masonry Stone crafting Construction
Location
Found in igneous intrusive layers as large clusters Found in metamorphic layers as large clusters
Properties
Material value 1☼ Fire-safe Magma-safe Melting point 12250 °U (m) Boiling point 14000 °U (m) Ignition point none (m) Solid density 2560 kg/m³ Specific heat 800 J/kg·K Color chestnut
Wikipedia article

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You have struck orthoclase!

Orthoclase is a common yellow stone which conveniently happens to be magma-safe. Along with microcline, it is one of the most common types of stone most players will encounter.

In Real Life

Orthoclase, a potassium-aluminum silicate, is an Alkali feldspar mineral that forms in relatively moderate temperature for an igneous mineral, between 500 and 900 degrees centigrade. Orthoclase's chemical formula is identical to that of Microcline (KAlSi₃O₈), but microcline forms at lower temperatures (usually below 400 degrees Celsius). Gem-quality orthoclase is one of two minerals that are called Moonstone.

Orthoclase.

Raws
used with kaolinite sometimes for ceramics [INORGANIC:ORTHOCLASE] [USE_MATERIAL_TEMPLATE:STONE_TEMPLATE] [STATE_NAME_ADJ:ALL_SOLID:orthoclase][DISPLAY_COLOR:6:7:1][TILE:'%'] [ENVIRONMENT:IGNEOUS_INTRUSIVE:CLUSTER:100] [ENVIRONMENT:METAMORPHIC:CLUSTER:100] [IS_STONE] [MELTING_POINT:12250] [SOLID_DENSITY:2560] [STATE_COLOR:ALL_SOLID:CHESTNUT]

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Sedimentary	Calcite · Chalk · Chert · Claystone · Conglomerate · Dolomite · Limestone · Mudstone · Rock salt · Sandstone · Shale · Siltstone
Igneous	Intrusive Diorite · Gabbro · Granite Extrusive Andesite · Basalt · Dacite · Obsidian · Rhyolite
Metamorphic	Gneiss · Marble  · Phyllite · Quartzite · Schist · Slate
Ore	Adamantine, raw · Aluminum, native · Bismuthinite · Cassiterite · Copper, native · Galena · Garnierite · Gold, native · Hematite · Horn silver · Limonite · Magnetite · Malachite · Platinum, native · Silver, native · Sphalerite · Tetrahedrite
Economic	Alabaster · Bituminous coal · Calcite · Gypsum · Kaolinite · Lignite · Satinspar · Selenite
Other	Alunite · Anhydrite · Bauxite · Borax · Brimstone · Chromite · Cinnabar · Cobaltite · Cryolite · Graphite · Hornblende · Ilmenite · Jet · Kimberlite · Marcasite · Mica · Microcline · Olivine · Orpiment · Orthoclase · Periclase · Petrified wood · Pitchblende · Puddingstone · Pyrolusite · Realgar · Rutile · Saltpeter · Serpentine · Slade · Stibnite · Sylvite · Talc