• Sewardite - Wikipedia

    en.wikipedia.org/wiki/Sewardite Sewardite is a rare arsenate mineral with formula of CaFe 2 +3 (AsO 4) 2 (OH) 2. Sewardite was discovered in 1982 and named for the mineralogist, Terry M. Seward (born 1940), a professor of geochemistry in Zürich, Switzerland. Properties. Sewardite is orthorhombic, which means in crystallographic terms, it contains 3 axes of unequal length, one "c" axis, and 1 "a" axis, and 1 "b" axis.
  • Sewardite: Mineral information, data and localities.

    www.mindat.org/min-11128.html Search for Sewardite on Well-Arranged Molecules; Buy rare minerals from Excalibur Minerals. Localities for SewarditeHide. This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality ...
  • Sewardite dictionary definition | sewardite defined

    www.yourdictionary.com/sewardite sewardite definition: Noun 1. (mineralogy) An orthorhombic-dipyramidal mineral containing arsenic, calcium, hydrogen, iron, oxygen, and zinc.Origin -ite...
  • Sewardite - Mindat.org - Mines, Minerals and More

    www.mindat.org/gm/11128 Rosette-shaped sewardite aggregate (PXRD- and EDS-analysed). SEM micrograph. Deep-red rounded to rosette-shaped sewardite aggregates (PXRD- and EDS-analysed), with a diameter of about 0.1 mm. The sewardite is associated with fine-grained, yellowish beudantite/segnitite (slightly K- and Cu-bearing). The sample was originally in the collection ...
  • Sewardite - Tsumeb

    www.tsumeb.com/en/minerals/662/sewardite Sewardite is the calcium-dominant analogue of carminite. In the type specimen sewardite occurs as dark-red, platy to compact, anhedral to subhedral masses to 0.3 mm. It is intimately inter-grown with a dark botryoidal mass of a close mixture of ferrilotharmeyerite and "another tsumcorite group mineral" that may be a cuprian / zincian variety of ...
  • sewardite - Wiktionary

    en.wiktionary.org/wiki/sewardite sewardite An orthorhombic-dipyramidal mineral containing arsenic, calcium, hydrogen, iron, oxygen, and zinc. References “Sewardite ...
  • Sewardite Mineral Data

    webmineral.com/data/Sewardite.shtml Sewardite Comments: Photomicrograph of an isolated fragment of red sewardite as well as a fragment in green to black botryoidal matrix. Location: Single specimen of gangue collected from the 31st level of the Tsumeb mine, Tsumeb, Namibia.
  • Sewardite - RRUFF Database: Raman, X-ray, Infrared, and ...

    rruff.info/sewardite Sewardite: R141206: CaFe 3+ 2 (AsO 4) 2 (OH) 2: Shields Flynn : Tsumeb, Namibia: Displaying: 1 - 2 2 Records Found Search Again: Enter search criteria or leave all the fields blank to retrieve all available data. Mineral: lookup. Chemistry Includes: lookup: Chemistry Excludes: General: Sort By: ...
  • SEWARDITE, CaFe3+ (AsO (OH) , THE Ca-ANALOGUE OF CARMINITE ...

    rruff-2.geo.arizona.edu/uploads/CM40_1191.pdf Sewardite is the Ca-dominant analogue of carminite, ideally Pb2+Fe3+(AsO 4) 2(OH) 2. Keywords: sewardite, new mineral species, calcium iron hydroxide-arsenate, carminite, X-ray data, electron-microprobe data, reflectance data, infrared spectroscopy, crystal structure, Tsumeb mine, Tsumeb, Namibia. SOMMAIRE
  • Meet the Crew - Seward Ocean Excursions

    sewardoceanexcursions.com/meetthecrew Meet the Crew. Captain Bixler McClure. Captain Bixler is a fifth generation Sewardite who is instantly recognizable by his unique name and his attempt to wear shorts all year round. With a lifetime of experience on the water, he holds a USCG 100 ton Master Near Coastal license and Able Seaman Unlimited license. Captain Bixler has an M.A. in ...