occurring in monoclinic crystals, or in granular, compact, or powdery form, often in association with the related mineral,
orpiment (As 2 S 3).
Kaynak: RealgarThis bright yellow solid is a well known mineral
orpiment (Latin: auripigment), has been used as a pigment, and has played a role in the
Kaynak: Arsenic trisulfideArsenic trisulfide , As 2 S 3, the mineral
orpiment. Tetraarsenic tetrasulfide, As 4 S 4, the mineral realgar Tetraarsenic trisulfide, As 4 S
Kaynak: Arsenic sulfideHe described the 'fiery poison' as being formed when a certain mineral (most probably realgar or
orpiment ) was fused with natron
Kaynak: AgathodaimonCommonly found as small octahedra it is white, but impurities of realgar or
orpiment may give it a pink or yellow hue.
orpiment (As 2
Kaynak: ArsenolitePigments were also made in ancient times from a mineral known as
orpiment .
Orpiment was an important item of trade in the Roman Empire
Kaynak: Orange (colour)Associated minerals include stibnite , realgar ,
orpiment , cinnabar , vrbaite , greigite , marcasite , pyrite , tetrahedrite , antimonian
Kaynak: LoranditeWith 46% arsenic content, arsenopyrite, along with
orpiment , is a principal ore of arsenic. When deposits of arsenopyrite become
Kaynak: Arsenopyritespirits of wine), quicksilver , sal ammoniac , alum , litharge ,
orpiment , saltpetre , silver , sugar , sulphur , tin , verdigris ,
Kaynak: John DamianIt can be associated with arsenolite (the cubic form of As 2 O 3) as well as realgar (As 4 S 4),
orpiment (As 2 S 3) and native sulfur
Kaynak: ClaudetiteIt is generally more rare than realgar and
orpiment . Its origin is hydrothermal . It occurs as subhedral to euhedral tabular orange to
Kaynak: Alacránitepoisonous arsenic compounds (realgar and
orpiment ), which contributed to its replacement by safer flares in the early twentieth century.
Kaynak: Blue light (pyrotechnic signal)The Egyptians used yellow extensively in tomb paintings; they usually used either yellow ochre or the brilliant
orpiment , though it was
Kaynak: Yellow