Aurotype
Encyclopedia
Aurotype is a monochrome photographic printing process that uses Gold chloride
, potassium ferricyanide
and ferrocyanide
. It was described in 1844 by Robert Hunt
. It is a member of the Siderotype
family of processes.
Gold chloride
Gold chloride can refer to:* Gold chloride , AuCl* Gold chloride , AuCl2* Gold chloride , AuCl3* Chloroauric acid, HAuCl4...
, potassium ferricyanide
Potassium ferricyanide
Potassium ferricyanide is the chemical compound with the formula K3[Fe6]. This bright red salt contains the octahedrally coordinated [Fe6]3− ion. It is soluble in water and its solution shows some green-yellow fluorescence.-Preparation:...
and ferrocyanide
Potassium ferrocyanide
Potassium ferrocyanide is the inorganic compound with formula K4[Fe6]•3H2O. It is the potassium salt of the coordination complex [Fe6]4-. This salt forms lemon-yellow monoclinic crystals.-Synthesis:...
. It was described in 1844 by Robert Hunt
Robert Hunt (scientist)
Robert Hunt , a scientist and antiquarian, was born at Devonport, Plymouth, in the United Kingdom. He was involved in statistical, mineralogical and other studies. He died in London on 17 October 1887.-Early life:...
. It is a member of the Siderotype
Siderotype
Siderotype is an iron-based photographic print. The term was coined by Sir John Frederick William Herschel. A short list of processes defined as siderotypes is as follows: amphitype, argentotype, argyrotype, aurotype, breath print, Brown Line, chromatic photo, chrysotype, cyanotype, ferrogallic...
family of processes.