pyrrhotite


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Related to pyrrhotite: cinnabar, arsenopyrite, pentlandite, molybdenite

pyr·rho·tite

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

pyrrhotite

(ˈpɪrəˌtaɪt) or

pyrrhotine

n
(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]

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:
Noun1.pyrrhotite - a brownish iron sulfide mineral (FeS) having weak magnetic propertiespyrrhotite - a brownish iron sulfide mineral (FeS) having weak magnetic properties
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
Their provision urges the National Institute of Standards and Technology (NIST) to establish regulations for acceptable levels of pyrrhotite a mineral found in concrete that is suggested to be the cause of the crumbling foundations.
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.
The sulphide minerals consist of varying proportions of pyrite, pyrrhotite and sphalerite with lesser galena, arsenopyrite and chalcopyrite.
Drill testing of six isolated magnetic high anomalies resulted in the intersection of weakly magnetic pyrrhotite bearing metamorphosed sedimentary rocks.
A kinetic/mass transport model was proposed based on oxidation of pyrrhotite.
Examples are provided for the Muskox Intrusion, Pyrrhotite Lake, the Fox River sill, the East Bull Lake, Agnew and River Valley intrusions of the Sudbury Basin and finally, the Lac des Isles Intrusion in Ontario, site of our single active Canadian mine producing exclusively PGE.
SEQUENTIAL ALTERATION OF LARGE PYRRHOTITE CRYSTALS TO MARCASITE, SKELETAL PYRITE, AND GOETHITE IN PEGMATITIC CARBONATITES AND FLUORITE ORES AT OKORUSU, NORTH CENTRAL NAMIBIA.
Pyrrhotite is the dominant sulphide with concentrations typically an order of magnitude greater than that of pyrite; and
It was determined that the geophysical anomaly was caused by sheared, disseminated pyrrhotite (iron sulfide), with no significant gold values and only slightly elevated base metal values.
Two holes at Cotswold (Table 1) intersected felsic volcanic rocks containing abundant pyrite stringers and aggregates, which have subsequently been intensely altered, brecciated, and invaded by hydrothermal fluids rich in amphibole, magnetite, quartz, pyrite, chalcopyrite and pyrrhotite (see ASX release 29 August 2012).