Information card for entry 9015911

Structure parameters

• Mineral name: Chromio-pargasite
• Formula: Al2.06 Ca1.88 Cr0.6 Fe0.14 H2 K0.07 Mg4.06 Na O24 Si6.12 Ti0.02
• Calculated formula: Al2.06 Ca1.88 Cr0.6 Fe0.14 H2 K0.07 Mg4.06 Na O24 Si6.12 Ti0.02
• Title of publication: Ehimeite, NaCa2Mg4CrSi6Al2O22(OH)2: The first Cr-dominant amphibole from the Akaishi Mine, Higashi-Akaishi Mountain, Ehime Prefecture, Japan
• Authors of publication: Nishio-Hamane D; Ohnishi, M.; Minakawa, T.; Yamaura, J.; Saito, S.; Kadota, R.
• Journal of publication: Journal of Mineralogical and Petrological Sciences
• Year of publication: 2012
• Journal volume: 107
• Pages of publication: 1 - 7
• a: 9.9176 Å
• b: 18.0057 Å
• c: 5.2865 Å
• α: 90°
• β: 105.395°
• γ: 90°
• Cell volume: 910.155 ų
• Number of distinct elements: 11
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No