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Hennepin, Louis

(Encyclopedia)Hennepin, Louis hĕnˈəpĭn [key], 1640–1701?, French cleric and explorer in North America. A Franciscan Recollect friar, Hennepin came to Canada in 1675, meeting on the journey La Salle, who made ...

tektite

(Encyclopedia)tektite tĕktīt [key], naturally occurring, silica-rich (65%–80% SiO2) glass resembling obsidian and sometimes shale, and is normally jet black to olive green. They appear as small rounded or elong...

Cantabria

(Encyclopedia)Cantabria käntäˈbrēä [key], autonomous community and coextensive prov., 2,057 sq mi (5,328 sq ...

Powell, John Wesley

(Encyclopedia)Powell, John Wesley, 1834–1902, American geologist and ethnologist, b. Mt. Morris (now part of New York City). The family moved to Illinois, where Powell joined the Natural History Society, making c...

Potter's Bar

(Encyclopedia)Potter's Bar, town (1991 pop. 22,755), Hertfordshire, central England, in the Midlands. Potter's Bar is a residential district, most of which is within the Green Belt Zone barred to industrial develop...

jasper, type of quartz

(Encyclopedia)jasper, opaque, impure cryptocrystalline quartz, usually red, but also yellow, green, and grayish blue. It is used as a gem. Ribbon jasper has the colors in stripes. ...

Notre Dame Mountains

(Encyclopedia)Notre Dame Mountains, section of the Appalachian system, extending c.500 mi (800 km) from the Green Mts. of Vermont into the Gaspé Peninsula, Canada. Worn low by erosion, the ancient mountains have a...

bloodstone

(Encyclopedia)bloodstone or heliotrope, green chalcedony spotted with red, used as a gem stone. It is found in India, the United States, Brazil, and Australia. ...

boa

(Encyclopedia)boa bōˈə [key], name for live-bearing constrictor snakes of the family Boidae, found mostly in the Americas. This family, which also comprises the egg-laying pythons of the Old World, includes the ...

Valley Stream

(Encyclopedia)Valley Stream, village (1990 pop. 33,946), Nassau co., SE N.Y., on Long Island, a residential suburb of New York City; inc. 1925. Kennedy International Airport is to the west. Valley Stream is the sit...