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  2. Spinel group - Wikipedia

    en.wikipedia.org/wiki/Spinel_group

    Inverse spinel structures have a different cation distribution in that all of the A cations and half of the B cations occupy octahedral sites, while the other half of the B cations occupy tetrahedral sites. An example of an inverse spinel is Fe 3 O 4, if the Fe 2+ (A 2+) ions are d 6 high-spin and the Fe 3+ (B 3+) ions are d 5 high-spin.

  3. Filipstadite - Wikipedia

    en.wikipedia.org/wiki/Filipstadite

    Filipstadite is a very rare mineral [4] of the spinel group, with the formula (Mn,Mg)(Sb 5+ 0.5 Fe 3 + 0.5)O 4. [5] It is isometric, [3] although it was previously thought to be orthorhombic. When compared to a typical spinel, both the octahedral and tetrahedral sites are split due to cation ordering. [3] Filipstadite is chemically close to ...

  4. Maghemite - Wikipedia

    en.wikipedia.org/wiki/Maghemite

    Maghemite (Fe 2 O 3, γ-Fe 2 O 3) is a member of the family of iron oxides.It has the same formula as hematite, but the same spinel ferrite structure as magnetite (Fe 3 O 4) and is also ferrimagnetic.

  5. Spinel - Wikipedia

    en.wikipedia.org/wiki/Spinel

    Polyhedral representation of spinel MgAl 2 O 4. Spinel (/ s p ɪ ˈ n ɛ l, ˈ s p ɪ n əl / [7]) is the magnesium/aluminium member of the larger spinel group of minerals. It has the formula MgAl 2 O 4 in the cubic crystal system. Its name comes from the Latin word spinella, a diminutive form of spine, in reference to its pointed crystals. [5]

  6. Hercynite - Wikipedia

    en.wikipedia.org/wiki/Hercynite

    Hercynite is a spinel of regular symmetry and normal cation distribution, but some disorder occurs in its structure. It consists of ferrous (Fe 2+) ions and aluminium ions (Al 3+); however some ferric ions (Fe 3+) may be located in the structure of hercynite.

  7. Accused beach killer had interest in true crime - court - AOL

    www.aol.com/accused-beach-killer-had-interest...

    A man accused of stabbing a woman to death on a beach told police he had an interest in true crime and horror movies, a jury has heard. Nasen Saadi killed Amie Gray, 34, and seriously injured 38 ...

  8. What will happen to Social Security under Trump’s tax plan?

    www.aol.com/finance/happen-social-security-under...

    Bottom line. Trump’s proposal to cut Social Security taxes highlights the ongoing debate about the program’s complexities. While some recipients could benefit from tax-free benefits ...

  9. Chuck Woolery, “Love Connection” and Original “Wheel of ...

    www.aol.com/chuck-woolery-love-connection...

    Chuck Woolery, the original host of Wheel of Fortune, has died.He was 83. Woolery died at his home in Texas with his wife present, his friend and Blunt Force Truth podcast co-host Mark Young ...