| 00758: Gypsum (twinned) - $30 Cartagena, Murcia, Spain Cabinet - 10.4 x 4.1 x 3.9 cm 134 grams Fluorescent (LW/SW) Ex Warren Mathews Foote, Hugh A. Ford Specimen status: Available Send an email with specimen number to order A twinned, mostly translucent, light
amber brown gypsum crystal, cleaved on one face. Shows
modest fluorescence under both longwave UV (blacklight)
and shortwave UV. Most notable for its provenance; carries
both Warren Mathews Foote and Hugh A. Ford labels, dating the
specimen to sometime before Foote stopped selling mineral
specimens in 1916.
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