green+porphyry
21Oliva porphyria — Porphyry Por phy*ry, n.; pl. {Porphyries}. [F. porphyre, L. porphyrites, fr. Gr. ? like purple, fr. ? purple. See {Purple}.] (Geol.) A term used somewhat loosely to designate a rock consisting of a fine grained base (usually feldspathic) through… …
22Porphyries — Porphyry Por phy*ry, n.; pl. {Porphyries}. [F. porphyre, L. porphyrites, fr. Gr. ? like purple, fr. ? purple. See {Purple}.] (Geol.) A term used somewhat loosely to designate a rock consisting of a fine grained base (usually feldspathic) through… …
23Geology of the Australian Capital Territory — Australia grew around three fused pieces of very ancient continental crust (cratons). The geology of the Australian Capital Territory includes rocks dating from the Ordovician around 480 million years ago, whilst most rocks are from the Silurian …
24Gnosticism — This article is part of a series on Gnosticism History of Gnosticism …
25philosophy, Western — Introduction history of Western philosophy from its development among the ancient Greeks to the present. This article has three basic purposes: (1) to provide an overview of the history of philosophy in the West, (2) to relate… …
26Diocletianic Persecution — The Christian Martyrs Last Prayer, by Jean Léon Gérôme (1883) The Diocletianic Persecution (or Great Persecution) was the last and most severe persecution of Christians in the Roman empire.[1] In 303, Emperor …
27copper processing — Introduction use of smelting or leaching, usually followed by electrolytic refining or recovery, to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of copper and of its… …
28Mosque of Uqba — Great Mosque of Kairouan Overview of the mosque s courtyard which is surrounded by colonnaded arches Basic information Location …
29Mount Pleasant Caldera — Elevation approx. 248 m (814 ft) Listing List of volcanoes in Canada …
30Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… …
