Information card for entry 9013918

Structure parameters

• Mineral name: Mountainite
• Formula: Ca2 H2.44 K Na2 O26 Si8
• Calculated formula: Ca2 H13 K Na2 O26 Si8
• Title of publication: The crystal structure and refined formula of mountainite, KNa2Ca2[Si8O19(OH)]*6H2O Locality: Yubileinaya pegmatite, Lovozero alkaline complex, Kola Peninsula, Russia
• Authors of publication: Zubkova, N. V.; Pekov, I. V.; Pushcharovsky, D. Y.; Chukanov, N. V.
• Journal of publication: Zeitschrift fur Kristallographie
• Year of publication: 2009
• Journal volume: 224
• Pages of publication: 389 - 396
• a: 13.704 Å
• b: 6.576 Å
• c: 13.751 Å
• α: 90°
• β: 105.752°
• γ: 90°
• Cell volume: 1192.67 ų
• Number of distinct elements: 6
• Space group number: 13
• Hermann-Mauguin space group symbol: P 1 2/c 1
• Hall space group symbol: -P 2yc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No