pyr·rho·tite

(pĭr′ə-tīt′) also pyr·rho·tine (-tīn′)

A brownish-bronze iron sulfide mineral, FeS, characterized by weak magnetic properties and used as an iron ore and in the manufacture of sulfuric acid. Also called magnetic pyrites.

[Alteration (influenced by -ite) of German Pyrrhotin, from Greek purrotēs, redness, from purros, fiery, from pūr, fire; see paəwr̥ in Indo-European roots.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pyrrhotite

(ˈpɪrəˌtaɪt) or

pyrrhotine

(Minerals) a common bronze-coloured magnetic mineral consisting of ferrous sulphide in hexagonal crystalline form. Formula: FeS

[C19: from Greek purrhotēs redness, from purrhos fiery, from pur fire]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pyr•rho•tite

(ˈpɪr əˌtaɪt)

n.

a bronze-colored magnetic mineral, iron sulfide, occurring in massive and in crystal forms.

[1868; < Greek pyrrhót(ēs) redness + -ite¹]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

pyrrhotite - a brownish iron sulfide mineral (FeS) having weak magnetic properties

magnetic pyrites, pyrrhotine

mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition

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References in periodicals archive

Gold mineralization in the sulphurised (pyrrhotite, pyrite, and chalcopyrite) BIF; which is coincident with chargeability anomalies defined by a VTEM geophysical airborne survey flown in 2015, according to the Optionee.

Treasury's Weebigee-Sandy Lake Gold Project is reporting new gold discovery at the W3 Zone, Sandy Lake, Ontario

Subsequent prospecting on the property has also revealed large, angular, pyrrhotite and quartz mineralized boulders on a new logging road.

Golden Goliaths Induced Polarization Geophysical Survey on the Wish Ore Property Yields Multiple Drill targets

Pyrite, pyrrhotite, chalcopyrite, molybdenite and scheelite are present.

Rumble Resources Ltd (ASX:RTR) Option to Acquire High-Grade Western Queen Gold Project

She is currently researching cement solidification in the microgravity environment plus 3D printing of concrete (separate NASAfunded projects), plus pyrrhotite reactivity in concrete (funded by NSF).

Flood Laboratories

Pyrrhotite and pyrite have been reported as the most

Smoke Emissions from Shinas Copper Mine Due to Sulphide Combustion

(2) The first event of mineralization that presents quartz with massive texture, and coarse-grained pyrite with small inclusions of gold and is associated with galena, sphalerite, chalcopyrite and pyrrhotite.

Microthermometry and Raman spectroscopy of fluid inclusions from El Vapor gold mineralizations, Colombia/Microtermometria y espectroscopia Raman de inclusiones fluidas de las mineralizaciones auriferas de El Vapor, Colombia

The most cited monosulfides are tetragonal mackinawite, hexagonal troilite, monoclinic pyrrhotite, and hexagonal pyrrhotite, all which are relatively stable in oxygen-free acid media [21-23].

A Comparative Study of Hydrogen-Induced Cracking Resistances of API 5L B and X52MS Carbon Steels

Summary: Norilsk Nickel has reported an unexpectedly weak 1Q17 trading update, with a 5% fall in own nickel production and a 17-28% YoY decline in palladium/platinum output, affected by the slow ramp-up of downstream facilities and also the high dilution in processing its depleting pyrrhotite concentrate feedstock at Polar division.

RUSSIA: NORILSK NICKEL

Fine grained nickel and copper sulphides indentified in petrography included pentlandite, millerite and chalcopyrite in association with pyrrhotite and pyrite.

-Heron's Nova style nickel-copper sulphide targets