TRANSACTIONS OP SECTION C. 



649 



Pentlanditc 



Greenockite 



Millerite 



Niccolite 



Pyrrhotite 



Covellite 



(?) Bornitc 

 Chalcopyrite 

 Pyrites 

 GersdorfEtb 

 Marcasite 

 Kermesite 



(?) Bournonite 

 Tctrahedrite 

 Salt 



Sal-ammoniac 

 Fluor 

 Quartz 

 Quartzine 

 Tridymite 

 Opal 



Valentinite 

 Cervantite 

 Water 

 Cuprite 

 Corundum 

 Hsematite 

 Ilmenite 

 Spinel 

 Magnetite 

 Chromite 

 Eutile 

 Plattnerite 

 Brookite 

 Pyrolusite 

 Turgile 

 Goethite 

 Manganite 

 Limonite 

 Brucite 

 Pyroaurite 

 Psilomelane 

 Calcite 

 Caledonite 

 Linarite 

 Gypsum 

 Epsomite 

 Morenosite 

 Melanterite 

 Alum 



Hydrocerussite 



Orthoclase 



Microcline 



Anorthoclase 



Albite 



Oligoclase 



Andesine 



Labradorite 



Anorthite 



Enstatite 



HyjDersthene 



Augite 



^girine 



Spodumene 



Wollastonite 



Pectolite 

 (?) Babingtonite 



Hornblende 

 (?) Glaucophane 



Eiebeckite 



Beryl 



lolite 



Nepheline 



Sodalite 



Garnet 



Forsterite 



Olivine 



Wernerite 



Idocrase 



Zircon 



Thorite 



Topaz 



Andalusite 



Sillimanite 



Kyanite 



Datolite 



Zoisite 



Epidote 



Allanite 



Prehnite 



Hemimorphite 



Tourmaline 



Staurolite 



Pickeringite 



Halotrichite 



Wulfenite 



Hatchettolite 



Ozocerite 



Fichtelite 



Ketinite 



Levyne 



Analcime 



Edingtonite 



Natrolite 



Scolecite 



Mesolite 



Thomsoiiite 



Muscovite 



Zinnwealdite 



Biotite 



Phlogopite 



liepidomelane 



Haughtonite 



Chloritoid 



Ottrelite 



Clinochlore 



Pennine 



Proclilorite 



Delessite 



Serpentine 



Talc 



Saponite 



Celadonite 



Glauconite 



Kaolinitc 



(?) Halloysite 

 Chrysocolla 

 Pilolite 

 Spbene 

 Apatite 

 Pyromorphite 

 Vanadinite 

 Vivianite 

 Erythrite 

 Annabergite 

 Wavellite 



(?) Glauberite 

 Barytas 

 Celestine 

 Anglesite 



(?) Vauquelinite 

 Leadhillite 

 Lanarkite 

 Torbernite 

 Bathvillite 

 Middletonite 

 Petroleum 

 Asphaltum 

 Elaterite 

 Albertite, &c. 



The following are remarkable by their absence : — Calamine, Witherite, Leucite, 

 Axinite, Anhydrite ; and Marcasite and Fluor by their rarity. 



3. The Occurrence of Barium Sulphate and Calcium Fluoride as Cementing 

 Substances in the Ekjin I'rias. By Wm. Mackie, M.A., M.D. 



Barium sulphate as a cement of sandstone was first noted by Professor Clowes 

 in 1885 as occurring in Triassic rocks near Nottingham. Other localities in sand- 

 stones of the same age have since been noted, all of them in the north or centre of 

 England. 



Barium sulphate in the Elgin Trias was first observed by the author in 1805. 



