sailaufite
A monoclinic-domatic mineral containing arsenic, calcium, carbon, hydrogen, manganese, oxygen, and sodium.

sainfeldite
A monoclinic-prismatic mineral containing arsenic, calcium, hydrogen, and oxygen.

sakhaite
An isometric-gyroidal mineral containing boron, calcium, carbon, hydrogen, magnesium, and oxygen.

sakharovaite
A monoclinic lead gray mineral containing antimony, bismuth, iron, lead, and sulfur.

sakuraiite
An isometric mineral containing copper, indium, iron, silver, sulfur, tin, and zinc.

salamstone
A kind of blue sapphire brought from Ceylon.

salesite
An orthorhombic-dipyramidal mineral containing copper, hydrogen, iodine, and oxygen.

salite
diopside

salmonsite
A discredited mineral species, a mixture of jahnsite and hureaulite.

salzburgite
An orthorhombic-pyramidal light gray mineral containing bismuth, copper, iron, lead, and sulfur.

samfowlerite
A monoclinic-prismatic mineral containing beryllium, calcium, fluorine, hydrogen, manganese, oxygen, silicon, and zinc.

samiresite
Synonym of betafite.

sampleite
An orthorhombic-dipyramidal mineral containing calcium, chlorine, copper, hydrogen, magnesium, oxygen, phosphorus, potassium, and sodium.

samsonite
A black, monoclinic silver manganese antimony sulfosalt mineral.

samuelsonite
A monoclinic-prismatic colorless mineral containing aluminum, barium, calcium, hydrogen, iron, manganese, oxygen, phosphorus, sodium, and strontium.

sandstone
A sedimentary rock produced by the consolidation and compaction of sand, cemented with clay etc.

sandstones
plural of sandstone

saneroite
A triclinic-pinacoidal light orange mineral containing calcium, hydrogen, iron, manganese, oxygen, silicon, sodium, and vanadium.

sanjuanite
A triclinic white mineral containing aluminum, hydrogen, oxygen, phosphorus, and sulfur.

sanmartinite
A monoclinic-prismatic mineral containing iron, oxygen, tungsten, and zinc.

santaclaraite
A triclinic-pinacoidal mineral containing calcium, hydrogen, manganese, oxygen, and silicon.

santafeite
An orthorhombic-disphenoidal black mineral containing aluminum, arsenic, calcium, hydrogen, iron, magnesium, manganese, oxygen, sodium, strontium, and vanadium.

santanaite
A hexagonal-trapezohedral straw yellow mineral containing chromium, lead, and oxygen.

santite
A mineral containing potassium, boron, oxygen, and hydrogen.

sanukitoid
A variety of high-magnesium granitoid found in convergent margin settings.

sanukitoids
plural of sanukitoid

saponite
A trioctahedral smectite mineral.

saponites
plural of saponite

sappar
Alternative form of sappare.

sappare
kyanite

sapropels
plural of sapropel

sarabauite
A monoclinic-prismatic mineral containing antimony, calcium, oxygen, and sulfur.

sarcolite
A tetragonal-dipyramidal mineral containing aluminum, calcium, fluorine, oxygen, silicon, and sodium.

sarcolites
plural of sarcolite

sard
A variety of carnelian, of a rich reddish yellow or brownish red color.
Any of various brownish red earth pigments formerly used in cosmetics and painting; has more yellow, hardly any blue (see puce), is lighter than russet and darker than traditional carnelian.

sardachate
A variety of agate containing sard.

sardachates
plural of sardachate

sardel
sard

sardelle
Alternative form of sardel (“sardine”).

sardelles
plural of sardelle

sardels
plural of sardel

sardoin
sard; carnelian

sardoins
plural of sardoin

sardonyx
A gemstone having bands of red sard; a variety of onyx or chalcedony.

sardonyxes
plural of sardonyx

sards
plural of sard

sarmientite
A monoclinic-prismatic mineral containing arsenic, hydrogen, iron, oxygen, and sulfur.

sarsen
Any of various blocks of sandstone found in various locations in southern England.

sarsens
plural of sarsen

sartorite
A monoclinic-prismatic dear lead gray mineral containing antimony, arsenic, lead, sulfur, and thallium.

saryarkite
A mineral containing calcium, yttrium, aluminum, phosphorus, oxygen, silicon and hydrogen that is found in Kazakhstan.

sasaite
An orthorhombic white mineral containing aluminum, hydrogen, iron, oxygen, phosphorus, and sulfur.

sasbachite
Obsolete name for a supposed mineral, now believed to be phillipsite.

sassolin
Alternative form of sassoline.

sassoline
sassoline

sassolite
A volcanic mineral form of boric acid originally found in Sasso, near Volterra in Italy

sassolites
plural of sassolite

satimolite
An orthorhombic chalky white mineral containing aluminum, boron, chlorine, hydrogen, oxygen, potassium, and sodium.

satpaevite
An orthorhombic mineral containing aluminum, hydrogen, oxygen, and vanadium.

satterlyite
A trigonal-ditrigonal pyramidal mineral containing hydrogen, iron, magnesium, oxygen, and phosphorus.

saturnite
A mineral substance containing lead.

sauconite
A monoclinic-prismatic mineral containing aluminum, hydrogen, oxygen, silicon, sodium, and zinc.

sayrite
A monoclinic-prismatic mineral containing hydrogen, lead, oxygen, and uranium.

sbacchiite
A vitreous mineral found in a fumarole near Mount Vesuvius in Naples, Italy.

sborgite
A colourless sodium borate mineral with monoclinic crystals.

sborgites
plural of sborgite

scabland
High, flat land of igneous rock, with thin soil and deep channels formed by glaciers or glacial floods.

scablands
plural of scabland

scacchite
A trigonal-hexagonal scalenohedral mineral containing chlorine and manganese.

scagliola
Plasterwork imitating marble, granite, etc.

scagliolas
plural of scagliola

scainiite
A monoclinic-prismatic bluish black mineral containing antimony, lead, oxygen, and sulfur.

scalenohedra
plural of scalenohedron

scalenohedron
A polyhedron having twelve sides, each in the form of a scalene triangle, that is topologically equivalent to a hexagonal bipyramid and whose middle section can be said to inscribe a rhombohedron.

scalenohedrons
plural of scalenohedron

scandiobabingtonite
A triclinic-pinacoidal gray mineral containing calcium, hydrogen, iron, manganese, oxygen, scandium, and silicon.

scawtite
A monoclinic-prismatic colorless mineral containing calcium, carbon, hydrogen, oxygen, and silicon.

scawtites
plural of scawtite

schachnerite
A hexagonal-dihexagonal dipyramidal silver gray mineral containing mercury and silver.

schafarzikite
A tetragonal-ditetragonal dipyramidal mineral containing antimony, iron, and oxygen.

schairerite
A trigonal-ditrigonal pyramidal colorless mineral containing chlorine, fluorine, oxygen, sodium, and sulfur.

schallerite
A trigonal-ditrigonal pyramidal mineral containing arsenic, hydrogen, manganese, oxygen, and silicon.

schapbachite
An isometric-hexoctahedral grayish black mineral containing bismuth, lead, silver, and sulfur.

schaurteite
A hexagonal-ditrigonal dipyramidal silky white mineral containing calcium, germanium, hydrogen, oxygen, and sulfur.

scheelite
A mineral composed of calcium tungstate, with the chemical formula CaWO₄; one of the principal ores for tungsten.

scheelites
plural of scheelite

schertelite
An orthorhombic-dipyramidal colorless mineral containing hydrogen, magnesium, nitrogen, oxygen, and phosphorus.

scheuchzerite
A mineral containing sodium, manganese, magnesium, zinc, vanadium, silicon, oxygen and hydrogen, found in Italy and Switzerland.

schiavinatoite
A tetragonal-ditetragonal dipyramidal grayish pink mineral containing boron, niobium, oxygen, and tantalum.

schieffelinite
An orthorhombic-dipyramidal mineral containing hydrogen, lead, oxygen, sulfur, and tellurium.

schiller
A lustre, similar to sheen, observed in certain minerals, such as hypersthene or labradorite, due to the presence of minute parallel inclusions.

schillerite
schiller-spar

schillers
plural of schiller

schirmerite
An orthorhombic-dipyramidal white mineral containing bismuth, lead, silver, and sulfur.

schlanite
The part of anthracoxene that is soluble in ether.

schlegelite
An orthorhombic-dipyramidal yellow mineral containing arsenic, bismuth, calcium, lead, molybdenum, oxygen, phosphorus, and vanadium.