Orpiment is an arsenic sulphide that was used as a yellow pigment …

… and so that made me think it would be a good title for this occasional blog on pigments and minerals in the arts, with occasional diversions into urban geology and history. I’m a geologist who has worked on pigments in archaeology and art history for more than a decade, using techniques that are routine for identify minerals in geology and mineralogy. I’m a co-author of the book The Pigment Compendium which was published ten years ago and I have come across lots of new things since then, so here’s as good a place to write about them as any.

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About Ruth Siddall

Geologist, geoarchaeologist and co-author of The Pigment Compendium. Follow @R_Siddall; Facebook|Cultural & Urban Geology
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