| 41. | Layered peridotites are igneous sediments and form by mechanical accumulation of dense olivine crystals.
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| 42. | Consequently, Fe 2 + can replace the magnesium ion in the olivine structure.
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| 43. | Oxidation of Olivine ( FeMgSiO 2 ) releases Fe, Mg and Si ions.
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| 44. | These particular ringing rock boulder fields formed from a rock type called olivine diabase.
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| 45. | Both the normal and olivine diabase rocks are dark grey to black in color.
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| 46. | Their black augite and yellow green olivine are also easily observed in hand specimens.
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| 47. | In the A-type asteroid with a surface consisting of almost pure olivine.
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| 48. | At St Marys there were two volcanic eruptions of alkali-olivine basalt at.
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| 49. | From near Hobart there is olivine basalt from.
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| 50. | This allowed it to detect the presence of quartz, olivine, and hematite.
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