| 41. | Ferberite typically occurs in pegmatites, granitic greisens, and high temperature hydrothermal deposits.
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| 42. | It has also been reported from a pegmatite complex in Florence County, Wisconsin.
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| 43. | It occurs as a secondary mineral in pegmatite.
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| 44. | It occurs in pegmatites in a pyroxenite intrusion as crystals in clinochlore and kassite.
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| 45. | It forms from the oxidation of ferberite within granitic pegmatite lattice ( A2B2O6O ).
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| 46. | Pegmatites are noted for very large crystal size.
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| 47. | It occurs as metasomatic replacement in granitic pegmatites and within phosphatic nodules in shales.
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| 48. | Common types are pegmatites, aplites and elvans.
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| 49. | Margaret then notes that there are tourmaline-bearing and beryl-bearing pegmatites.
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| 50. | The mineral occurs in pegmatite deposits and is easily mistaken for albite and other feldspars.
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