Information card for entry 9004347

Structure parameters

• Mineral name: Pargasite
• Formula: Ca1.92 F2 Ga0.68 Mg4.92 Na0.27 O22 Si7.48
• Calculated formula: Ca1.92 F2 Ga0.68 Mg4.92 Na0.27 O22 Si7.48
• Title of publication: Synthesis and rietveld refinement of amphibole along the join Ca2Mg5Si8O22F2 - NaCa2Mg4Ga3Si6O22F2 Sample: PARG 10-1
• Authors of publication: Jenkins, D. M.; Hawthorne, F. C.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 1995
• Journal volume: 33
• Pages of publication: 13 - 24
• a: 9.8356 Å
• b: 18.025 Å
• c: 5.2801 Å
• α: 90°
• β: 104.793°
• γ: 90°
• Cell volume: 905.064 ų
• Number of distinct elements: 7
• 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