| 1. | Similarly, cummingtonite has lower ferric iron and aluminium than anthophyllite.
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| 2. | It is the iron endmember of the grunerite-cummingtonite series.
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| 3. | Calcium, sodium and potassium concentrations in cummingtonite are low.
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| 4. | Cummingtonite tends toward more calcium substitution than related anthophyllite.
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| 5. | Cummingtonite has also been found in some felsic volcanic rocks such as dacites.
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| 6. | Cummingtonite shares few compositional similarities with alkali amphiboles such as arfvedsonite, glaucophane-riebeckite.
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| 7. | With prograde metamorphism cummingtonite and grunerite morph to members of the olivine and pyroxene series.
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| 8. | It may be difficult to distinguish cummingtonite from the Mg rich variety in hand specimens.
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| 9. | These are : anthophyllite, riebeckite, cummingtonite / grunerite series, and actinolite / tremolite series.
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| 10. | Manganese also substitutes for ( Fe, Mg ) within cummingtonite amphibole, replacing B site atoms.
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