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Gahnite-Hercynite Series from
Icaria, North Aegean, Greece


Locality type:Island
Classification
Species:'Gahnite-Hercynite Series' (not an IMA approved species)
Comments:SEM/EDS analyses have shown that spinel in the study area is a solid solution between hercynite (49 to 71 %mole) and gahnite (24 to 49 %mole) whilst the Mg component is negligible. Two groups of spinel can be distinguished in terms of the gahnite component: group “A” with gahnite content ranging from 24 to 38 %mole and group “B” with higher contents of the gahnite component (46 - 49 %mole). Chemical zoning was detected only in group “A” with crystals showing an enrichment in the hercynite component toward the rims whilst the reverse pattern is true for the gahnite component. Spinel with even higher gahnite content (as much as 62 %mole) has been previously reported (Ockenga 2000) in Ikaria.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gahnite-Hercynite Series data
Locality Data:Click here to view Icaria, North Aegean, Greece
Data Identifiers
Mindat Occurrence Record ID:1227362
Long-form Identifier:1:3:1227362:7
GUID (UUID V4):766bc98b-f8c6-437c-8931-46da16a16709
References
 
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