|Title||Paper, 'Experiments on a mineral substance supposd to be Zeolite' by William Gregor|
|Date||14 June 1805|
Published in Philosophical Transactions, as 'Experiments on a mineral substance formerly supposed to be zeolite; with some remarks on two species of uran-glimmer'
Read 4 July 1805
|Physical description||Ink on paper|
|Related material||DOI: 10.1098/rstl.1805.0025|