| 11. | Red spinel may be mistaken for ruby by those lacking experience with gems.
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| 12. | Material loss of the spinel results in capacity fade.
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| 13. | Additionally, its distribution in the precursor spinel powders is of critical importance.
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| 14. | Minor minerals include chromium and aluminium spinels and garnets.
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| 15. | The nickel atoms are organized corresponding to a " normal " spinel arrangement.
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| 16. | Spinels are grouped in series by the B cation.
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| 17. | They have conducted extensive research into the dynamics involved during the densification of spinel.
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| 18. | Some natural spinel is also a deep black and could serve this same purpose.
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| 19. | Partial melting of spinel lherzolite is one of the primary sources of basaltic magma.
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| 20. | It commonly contains a few percent chromium-rich spinel as an accessory mineral.
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