On Allophane and an Allied Mineral found at Northampton
- 1 February 1871
- journal article
- Published by Geological Society of London in Quarterly Journal of the Geological Society
- Vol. 27 (1-2) , 234-237
- https://doi.org/10.1144/gsl.jgs.1871.027.01-02.32
Abstract
T he only English localities at which, to my knowledge, allophane has been shown to occur are the chalk-pits at Charlton, near Woolwich, the Purley downs, near Croydon, and a spot not far from Tavistock, in Devonshire. Dr. Charles Berrill, however, shortly before his death, discovered a mineral much resembling the Charlton allophane in physical properties in a pit opened in the ironstones of the Northampton Sand (beds of Inferior-Oolite age) in the grounds of the Northampton General Lunatic Asylum. It occurs as an amorphous, translucent, somewhat hard and exceedingly brittle mineral, of a yellowish colour inclining to red, and incrusting the surface of a sandstone rock.This publication has 0 references indexed in Scilit: