TY - JOUR T1 - Experiments on a Mineral Substance Formerly Supposed to be Zeolite; With Some Remarks on Two Species of Uran-Glimmer JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 95 SP - 331 EP - 348 PY - 1805/01/01/ UR - http://dx.doi.org/10.1098/rstl.1805.0025 M3 - doi:10.1098/rstl.1805.0025 AU - Gregor, W. ER -