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  2. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    State, federal district, territory Mineral Rock or stone Gemstone Alabama [1]: Hematite (1967): Marble (1969): Star blue quartz (1990): Alaska [2] [3]: Gold (1968 ...

  3. 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 ...

  4. 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 ...

  5. Martian spherules - Wikipedia

    en.wikipedia.org/wiki/Martian_spherules

    Martian spherules (also known as hematite spherules, blueberries, & Martian blueberries) are small spherules (roughly spherical pebbles) that are rich in an iron oxide (grey hematite, α-Fe 2 O 3) and are found at Meridiani Planum (a large plain on Mars) in exceedingly large numbers.

  6. Iron (II,III) oxide - Wikipedia

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

    Iron(II,III) oxide, or black iron oxide, is the chemical compound with formula Fe 3 O 4.It occurs in nature as the mineral magnetite.It is one of a number of iron oxides, the others being iron(II) oxide (FeO), which is rare, and iron(III) oxide (Fe 2 O 3) which also occurs naturally as the mineral hematite.

  7. Land contract - Wikipedia

    en.wikipedia.org/wiki/Land_contract

    The legal status of land contracts varies between jurisdictions. [vague] Since a land contract specifies the sale of a specific item of real estate between a seller and buyer, a land contract can be considered a special type of real estate contract. In the usual more conventional real estate contracts, a seller does not provide a loan to the ...

  8. Listing contract - Wikipedia

    en.wikipedia.org/wiki/Listing_contract

    A listing contract (or listing agreement) is a contract between a real estate broker and an owner of real property granting the broker the authority to act as the owner's agent in the sale of the property. [1] If the broker is a member of the National Association of Realtors, the agreement must include all of the following terms:

  9. Real estate transaction - Wikipedia

    en.wikipedia.org/wiki/Real_estate_transaction

    The sale of a house in the United States or Canada might involve some or all of the following steps: Hiring of a real estate broker the seller and handle the logistics of the advertising and sale, except for "for sale by owner" properties where the owner(s) may consult legal counsel or obtain copies of a real estate contract.