Jacobsite

Jacobsite

Infobox mineral
name = Jacobsite
category =
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imagesize =
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formula = iron(II,III) manganese oxide, MnFe2O4
molweight =
color = Black
habit = Disseminated to massive
system = Isometric Hexoctahedral
twinning =
cleavage = none
fracture = Conchoidal
mohs = 5.5 - 6.0
luster = Metallic
refractive = Opaque
opticalprop =
birefringence =
pleochroism =
streak = reddish black
gravity = 4.75
density =
melt =
fusibility =
diagnostic =
solubility =
diaphaneity =
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Jacobsite is a manganese iron oxide mineral. It is a magnetite spinel.

It was first described in 1869 and named for the location of Jakobsberg, Sweden.

References

* [http://www.mindat.org/min-2061.html Mindat with location data]
* [http://www.npi.gov.au/database/substance-info/profiles/52.html National Pollutant Inventory - Manganese and compounds Fact Sheet]
* [http://www.webmineral.com/data/Jacobsite.shtml Webmineral.com article]


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Look at other dictionaries:

  • jacobsite — /jay keuhb zuyt /, n. a rare magnetic mineral, manganese iron oxide, MnFe2O4, similar to magnetite. [1865 70; named after Jacobsberg Swedish locality; see ITE1] * * *       manganese iron oxide mineral, a member of the magnetite (q.v.) series of… …   Universalium

  • jacobsite — noun A manganese iron oxide mineral, a magnetite spinel …   Wiktionary

  • jacobsite — ja·cob·sì·te s.f. TS mineral. minerale raro di colore nero, magnetico, del gruppo degli spinelli, costituito da ossido multiplo di ferro e manganese {{line}} {{/line}} VARIANTI: iacobsite. DATA: 1956. ETIMO: der. di Jacobsberg, nome di una… …   Dizionario italiano

  • jacobsite — ja·cobs·ite …   English syllables

  • jacobsite — ˈjākəbˌzīt sometimes kəpˌsīt noun ( s) Etymology: French jakobsite, from Jakobsberg, Sweden, its locality + French ite : a black magnetic isometric mineral MnFe2O4 consisting of an oxide of manganese and iron and constituting a member of the… …   Useful english dictionary

  • List of minerals F-J (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

  • Magnétite — Catégorie IV : oxydes et hydroxydes[1] Magnétite et pyrite Italie …   Wikipédia en Français

  • magnetite — /mag ni tuyt /, n. a very common black iron oxide mineral, Fe3O4, that is strongly attracted by magnets: an important iron ore. [1850 55; MAGNET + ITE1; cf. G Magnetit] * * * or lodestone or magnetic iron ore Iron oxide mineral (Fe3O4), the chief …   Universalium

  • Spinel — General Category Oxide minerals Spinel group Chemical formula MgAl2O4 …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

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