ACTINOLITE Gallery Return to Actinolite page. Click on image for larger view | |
Ca2(Mg,Fe2+)5(Si8O22)(OH)2 Although common in other New England states, actinolite is a relatively rare species in New Hampshire. Several specimens that the author thought were actinolite were analyzed to be ferrohornblende. |
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Species: ACTINOLITE Locality: Ellacoya Locale, Gilford, NH Specimen Size: 1.2 mm field of view Field Collected: Tom Mortimer Catalog No.: u2256 Notes: A polished grain EDS analysis (BC357) indicated actinolite. The APFU calculated from this analysis is Ca2(Mg2.1,Fe1.77,Al0.22)Si7.7O16.2 normalized for 2 Ca. The trace of neon is a bogie. From analysis Mg/(Mg+Fe) = 0.55. This ratio must be less than 0.5 for ferroactinolite. So this is close to ferroactinolite. |
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Species: ACTINOLITE Locality: Ellacoya Locale, Gilford, NH Specimen Size: 3.5 mm field of view. Actinolite blades on feldspar. Field Collected: Tom Mortimer Catalog No.: NC Notes: |
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Species: ACTINOLITE Locality: Ellacoya Locale, Gilford, NH Specimen Size: 1.8 mm field of view. Stubby actinolite crystals in diorite vug. Field Collected: Tom Mortimer Catalog No.: Notes: |
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Species: ACTINOLITE var. Byssolite Locality: Ellacoya Locale, Gilford, NH Specimen Size: 14 mm field of view. Field Collected: Tom Mortimer Catalog No.: u2372 Notes: Byssolite is a fibrous to hair-like crystal or mass of fibers frequently in the actinolite-tremolite series, but may be any amphibole species. |
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Species: ACTINOLITE - TREMOLITE Locality: Ellacoya Locale, Gilford, NH Specimen Size: 1.3 mm field of view. White end of crystals suggests zoning to tremolite. Field Collected: Tom Mortimer Catalog No.: TBC Notes: |
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