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  2. Hematite - Wikipedia

    en.wikipedia.org/wiki/Hematite

    Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...

  3. Iron(III) oxide - Wikipedia

    en.wikipedia.org/wiki/Iron(III)_oxide

    It occurs in nature as the mineral hematite, which serves as the primary source of iron for the steel industry. It is also known as red iron oxide , especially when used in pigments . It is one of the three main oxides of iron , the other two being iron(II) oxide (FeO), which is rare; and iron(II,III) oxide ( Fe 3 O 4 ), which also occurs ...

  4. Hematine - Wikipedia

    en.wikipedia.org/wiki/Hematine

    Hematine ring. Hematine (also magnetic hematite, hemalyke or hemalike) is an artificial magnetic material. [1] Hematine is widely used in jewelry. [citation needed]Although it is claimed by many that it is made from ground hematite or iron oxide mixed with a resin, analysis (of one object) has demonstrated it to be an entirely artificial compound, a barium-strontium ferrite.

  5. Jaspillite - Wikipedia

    en.wikipedia.org/wiki/Jaspillite

    Jaspillite is typically a banded mixture of hematite and quartz common in the banded iron formation rocks of Proterozoic and Archaean age in the Canadian Shield. Jaspillite is also formed as exhalative chemical sediments in certain lead-zinc ore deposits, and as a hydrothermal alteration facies around submarine volcanism. It is used as a ...

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  7. Heliotrope (mineral) - Wikipedia

    en.wikipedia.org/wiki/Heliotrope_(mineral)

    A rough specimen of bloodstone. Heliotropes (from Ancient Greek ἥλιος (hḗlios) 'sun' and τρέπειν (trépein) 'to turn') (also called ematille, Indian bloodstones, or simply bloodstones) are aggregate minerals, and cryptocrystalline mixture of quartz that occurs mostly as jasper or sometimes as chalcedony (translucent).

  8. US accuses CVS of filling, billing government for illegal ...

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    (Reuters) -The U.S. Department of Justice announced a lawsuit on Wednesday accusing pharmacy chain CVS of filling illegal opioid prescriptions and billing federal health insurance programs ...

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