Gaeta, M., Freda, C. (2001) Strontian fluoro-magnesiohastingsite in Alban Hills lavas (Central Italy): constraints on crystallization conditions. Mineralogical Magazine, 65 (6) 787-795 doi:10.1180/0026461016560009
Reference Type | Journal (article/letter/editorial) | ||
---|---|---|---|
Title | Strontian fluoro-magnesiohastingsite in Alban Hills lavas (Central Italy): constraints on crystallization conditions | ||
Journal | Mineralogical Magazine | ||
Authors | Gaeta, M. | Author | |
Freda, C. | Author | ||
Year | 2001 (December) | Volume | 65 |
Page(s) | 787-795 | Issue | 6 |
Publisher | Mineralogical Society | ||
DOI | doi:10.1180/0026461016560009Search in ResearchGate | ||
Mindat Ref. ID | 243317 | Long-form Identifier | mindat:1:5:243317:6 |
GUID | f1f40b76-1fe6-4e99-845e-a47f8f51e6fd | ||
Full Reference | Gaeta, M., Freda, C. (2001) Strontian fluoro-magnesiohastingsite in Alban Hills lavas (Central Italy): constraints on crystallization conditions. Mineralogical Magazine, 65 (6) 787-795 doi:10.1180/0026461016560009 | ||
Plain Text | Gaeta, M., Freda, C. (2001) Strontian fluoro-magnesiohastingsite in Alban Hills lavas (Central Italy): constraints on crystallization conditions. Mineralogical Magazine, 65 (6) 787-795 doi:10.1180/0026461016560009 | ||
Abstract/Notes | AbstractA magmatic calcic amphibole (M4Ca≥1.50) characterized by large Sr and F contents (SrO>1 wt.%, F>2.5 wt.%) is described. According to the crystal-chemical formula, the amphibole can be classified as a strontian fluoro-magnesiohastingsite and the presence of Sr cations in the A sites is suggested. The amphibole occurs in the groundmass of ultrapotassic lavas from the Alban Hills Volcanic District (Central Italy). This peculiar chemical composition is due to the lavas' groundmass compositional trend occurring under low silica-activity conditions. We suggest that the occurrence of F amphiboles allows us to consider the Alban Hills Volcanic District magmas to be as rich in F as other ultrapotassic magmas. |
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