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Hematite (/ˈhiːməˌtaɪt, ˈhɛmə-/), also
spelled as haematite, is a
common iron
oxide compound with the formula, Fe2O3 and is
widely found in
rocks and soils...
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metasomatic alteration and
occurs in two main forms;
sulfidic jasperoids and
hematitic jasperoids. True
jasperoids are
different from jaspillite,
which is a...
- (2003). "Paleozoic and
Mesozoic silica-rich seawater:
Evidence from
hematitic chert (jasper) deposits". Geology. 31 (4): 319–22. Bibcode:2003Geo......
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sedimentary sequence of
quartz sandstone,
hematitic sandstone,
feldspathic sandstone, siltstone, and
hematitic conglomerate.
Irvine Island, with two neighboring...
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sedimentary sequence of
quartz sandstone,
hematitic sandstone,
feldspathic sandstone, siltstone, and
hematitic conglomerate, the
island has a
rugged dissected...
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Hematitic banded-iron
formation specimen from Michigan's
Upper Peninsula;
Scale bar is 5.0 mm...
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minor chalcopyrite. The
remaining 20% is
oxidized and
consists of
three hematitic ore types. The
deposit remained unmined in 2006. The
presence of coking...
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detrital material, and
exclude detrital iron
deposits typified by
scree of
hematitic banded iron
formations and ac****ulations of currently-forming maghemite...
- text PDF.
Sedimentary Concretions vs.
Impact Condensates:
Origin of the
Hematitic Spherules of
Meridiani Planum, Mars. Full text PDF.
Ironstone Concretions...
- centimeter-layered chert. The
layered chert consists of white-gray
layered chert and
hematitic chert or jaspilite.
Barite veins locally cut
across the
layered cherts...
