Important Update News
The RRUFF Project (rruff.info) is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional.
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Name: Geikielite RRUFF ID: R070479 Ideal Chemistry: MgTiO3 Locality: Colombo, Sri Lanka Source: Royal Ontario Museum M14941 [view label] Owner: RRUFF Description: Dark red fragment Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
Mineral Group: [ Corundum (38) ] |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R070479.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 5.049(2)Å b: 5.049(2)Å c: 13.886(6)Å alpha: 90° beta: 90° gamma: 120° Volume: 306.5(1)Å3 Crystal System: hexagonal |
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REFERENCES for Geikielite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file] |
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Dick A (1893) On geikielite, a new mineral from Ceylon, Mineralogical Magazine, 10, 145-147 [view file] |
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Chao G Y, Hounslow A W (1966) Abstract of paper presented at the eleventh annual meeting: The first Canadian occurrence of geikielite, The Canadian Mineralogist, 8, 664-664 [view file] |
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Robie R A, Haselton H T, Hemingway B S (1989) Heat capacites and entropies at 298.15 K of MgTiO3 (geikielite), ZnO (zincite), and ZnCO3 (smithsonite), Journal of Chemical Thermodynamics, 21, 743-749 |
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Wechsler B A, Von Dreele R B (1989) Structure refinement of Mg2TiO4, MgTiO3 and MgTi2O5 by time-of-flight neutron powder diffraction, Acta Crystallographica, B45, 542-549 |
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Liferovich R P, Mitchell R H (2005) Rhombohedral ilmenite group nickel titanates with Zn, Mg, and Mn: synthesis and crystal structures, Physics and Chemistry of Minerals, 32, 444-449 |
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Liferovich R P, Mitchell R H (2006) The pyrophanitegeikielite solid-solution series: crystal structures of the Mn1-xMgxTiO3 series (0 < x < 0.7), The Canadian Mineralogist, 44, 1099-1107 [view file] |
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Okada T, Narita T, Nagai T, Yamanaka T (2008) Comparative Raman spectroscopic study on ilmenite-type MgSiO3 (akimotoite), MgGeO3, and MgTiO3 (geikielite) at high temperatures and high pressures, American Mineralogist, 93, 39-47 [view file] |
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Robinson P, Langenhorst F, McEnroe S A, Fabian K, Ballaran T B (2014) Ferroan geikielite and coupled spinel-rutile exsolution from titanohematite: interface characterization and magnetic properties, American Mineralogist, 99, 1694-1712 |
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Tokle L, Robertson K M (2019) X-ray diffraction calibration of the Fe2+Mg2+ solid solution of ilmenite, with application to lunar basalts, European Journal of Mineralogy, 31, 473-483 |
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