Locality type: | Formation |
Classification |
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Species: | 'Sodium-Calcium Amphibole Subgroup' (not an IMA approved species) |
Formula: | An(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2 |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Sodium-Calcium Amphibole Subgroup data |
Locality Data: | Click here to view Caldeira-Castelinho Ignimbrite Formation, Angra do Heroísmo, Terceira, Azores, Portugal |
Data Identifiers |
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Mindat Occurrence Record ID: | 967500 |
Long-form Identifier: | 1:3:967500:1 |
GUID (UUID V4): | a9670c94-88c7-4505-97eb-745e814fcc9b |
References |
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Jeffery, A.J., Gertisser, R., Jackson, R.A., O'Driscoll, B., Kronz, A. (2016): PREPUBLICATION: On the compositional variability of dalyite, K2ZrSi6O15: a new occurrence from Terceira, Azores. Mineralogical Magazine, Prepublication, 39 pp. (available on line since January 1, 2016). |