S minerals

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Sanidine from Chastreix

from Chastreix, France.

Variety of high temperature K-feldspar.

Chemistry : KAlSi3O8
System : Monoclinic

Gemmy Sanidine

from Madagascar.

Variety of high temperature K-feldspar.

Chemistry : KAlSi3O8
System : Monoclinic

Sapphire

from various origins.

Corundum variety of different colors, not necessarily blue.

Chemistry : Al2O3
System : Trigonal

Scheelite

from various origins.

Rare mineral from pegmatite, metamorphic rocks or related hydrothermalism.

Chemistry : CaWO4
System: Tetragonal

Siderite

from various origins.

Carbonate from hydrothermal origin.

Chemistry : FeCO3
System : Trigonal

Smithsonite

from various origins.

A calcite group mineral.

Chemistry : ZnCO3
System : Trigonal

Sulphur

from various origins.

Fumarolic and evaporitic mineral.

Chemistry : S
System : Orthorhombic

Sphalerite

from various origins.

Main zinc ore from hydrothermal environments.

Chemistry : ZnS
System : Cubic

Spinel

from various origins.

Mineral from metamorphic limestones and pegmatites.

Chemistry : MgAl2O4
System : Cubic

Spodumene

from various origins.

Rare mineral from Li-rich pegmatites.

Chemistry : LiAlSi2O6
System : Monoclinic

Staurolite

from various origins.

Metamorphic mineral of amphibolite facies.

Chemistry : Fe2Al9(Si, Al)4O22(OH)2
System : Monoclinic

Stibnite

from various origins.

Mineral from hydrothermal origin.

Chemistry : Sb2S3
System : Orthorhombic

Stilbite

from various origins.

A zeolite group mineral.

Chemistry : NaCa4Al8Si28O72 · 30(H2O)
System : Orthorhombic

Stolzite

A rare mineral from lead and tungsten deposits. 

Chemistry : PbWO4
System : Tetragonal

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