mineral+vein
111Medicine in medieval Islam — In the history of medicine, Islamic medicine or Arabic medicine refers to medicine developed in the medieval Islamic civilization and written in Arabic, the lingua franca of the Islamic civilization. Despite these names, a significant number of… …
112Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… …
113Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
114Natural History (Pliny) — Naturalis Historia, 1669 edition, title page. The title at the top reads: Volume I of the Natural History of Gaius Plinius Secundus. The Natural History (Latin: Naturalis Historia) is an encyclopedia published circa AD 77–79 by Pliny the… …
115Monte Cristo Gold Mine — Coordinates: 34°21′N 118°05′W / 34.35°N 118.08°W / 34.35; 118.08 The Monte Cristo Gold Mine (Spanish for Mountain of Christ Gold Mi …
116Gold mining in Virginia — Most gold mining in Virginia was concentrated in the Virginia Gold Pyrite belt in a line that runs northeast to southwest through the counties of Fairfax, Prince William, Stafford, Fauquier, Culpeper, Spotsylvania, Orange, Louisa, Fluvanna,… …
117Penroseite — Infobox mineral name = Penroseite Category = boxwidth = boxbgcolor = imagesize = caption = formula = ((Ni,Co,Cu)Se2) molweight = color = steel grey system = isometric class 2/m3* cleavage = None fracture = Conchoidal mohs = 3 lower in impure… …
118Topic outline of mining — For a more comprehensive list, see the List of mining topics. Mining is the extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein or (coal) seam. Materials recovered by… …
119ader wax — noun a waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum; some varieties are used in making ceresin and candles • Syn: ↑earth wax, ↑mineral wax, ↑ozokerite, ↑ozocerite • Hypernyms: ↑mineral * * * ˈädə(r) …
120Scapolite — (Gr. asairos , rod, stone), is a group of rock forming silicate minerals composed of aluminium, calcium and sodium silicate with chlorine, carbonate and sulfate. The variations in composition of the different members of the group may be expressed …
