...: Ferro-pedrizite, a new amphibole-supergroup mineral was discovered in the Sutlug pegmatite occurrence situated in the Targi River Basin, Tyva Republic, Eastern Sibera, Russia. The associated minerals are quartz, albite, microcline, spodumene, cassiterite, beryl, columbite-(Mn), fergusonite-β-(Y...

..., 79, 1073–1087. This New Mineral Names has entries for 18 new minerals, including aradite, chlorkyuygenite, chubarovite, cryobostryxite, ferriakasakaite-(La), ferriandrosite-(La), ferro-pedrizite, flamite, flinteite, fluorchegemite, fluorkyuygenite, fluormayenite, fluor-tsilaisite, gatedalite...

..., namely ferri-clinoferroholmquistite (IMA–CNMMN 2001–066) and sodic-ferri-ferro-pedrizite (IMA–CNMMN 2001–068). Many changes were done in the nomenclature of the Li-rich amphiboles in an attempt to rationalize the various problems that arose as a result of the latest findings. Therefore, we provide...

... ) Si 8 O 22 (OH) 2 Ferro-ferri-holmquistite Ferro-ferri-holmquistite □ Li 2 (Mg 3 Al 2 ) Si 8 O 22 (OH) 2 “Clino-holmquistite” “Clino-holmquistite” Na Li 2 (Mg 2 Al 2 Li) Si 8 O 22 (OH) Pedrizite Pedrizite □ Li 2 (Fe 2+ 3 Al 2 ) Si 8 O 22 (OH) 2 Clino-ferro-holmquistite...

... There are two root compositions plus their ferro-, ferri- and ferro-ferri- analogues. END-MEMBER FORMULA SCHEME 1 SCHEME 2 □ Li 2 (Mg 3 Al 2 ) Si 8 O 22 (OH) 2 Clino-holmquistite Clino-holmquisitite Na Li 2 (Mg 2 Al 2 Li) Si 8 O 22 (OH) Pedrizite Pedrizite □ Li 2 (Fe 2...

... that the sample consists of a mixture of two distinct amphibole compositions, tremolite and a new amphibole end-member, fluoro-sodic-pedrizite, ideally A Na B Li 2 C (Mg 2 Al 2 Li) T Si 8 O 22 X F 2 (IMA-CNMMN 2004-002). Fluoro-sodic-pedrizite from Tastyg has the following crystal-chemical formula and unit-cell...

...), F), we list current names and compositions in Table 1 . During this work, another new amphibole was discovered, the `fluoro-ferro-' equivalent of `sodic-pedrizite', ideally A Na B Li 2 C ( \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts...

...+ 2 )Si 8 O 22 (OH) 2 Ferri-holmquistite □Li 2 (Fe 2+ 3 Fe 3+ 2 )Si 8 O 22 (OH) 2 Ferro-ferri-holmquistite Monoclinic □Li 2 (Mg 3 Al 2 )Si 8 O 22 (OH) 2 Clino-holmquistite NaLi 2 (Mg 2 Al 2 Li)Si 8 O 22 (OH) 2 Pedrizite NaLi 2 (Mg 4 Al)Si 8 O 22 (OH) 2 Rootname 5 □Li 2...

... 19116 How to cite: Konovalenko, S.I., Ananyev, S.A., Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Bakhtin, A.I., Nikolaev, A.G., Gainov, R., Sapozhnikov, A.N., Belakovskiy, D.I. and Bychkova, I.V. (2014) Ferro-pedrizite, IMA 2014-037. CNMNC Newsletter No. 21, August 2014, page 803...

...). It contains the maximum amount of Li that can be incorporated in the amphibole structure. The name was approved by the IMA-CNMMN together with restriction of the use of the prefix sodic in the pedrizite series to compositions with B Na > 0.5 apfu; its use for compositions with Na tot > 0.5 apfu has been...

...: leakeite, kornite, whittakerite and pedrizite) have more than half-occupied A-group sites. Seven new amphibole end-members containing lithium have been discovered in epysienites (dequartzified and albitised granites) from the Pedriza Massif (Central Spain), where lithium incorporation and partitioning...

..., significant A Na has never been reported for holmquistites but is common in ferro-, ferri-, and ferri-ferro-clinoholmquistites, where it couples with the presence of Li at the M3 site (thus giving rise to extensive solid-solution toward pedrizites). We thank the mineral collectors who kindly provided...

... systematic investigation of a series of episyenites from the East sector of the Pedriza Massif (Sierra de Guadarrama, Spanish Central System). This unusual occurrence provided samples which span the compositional space magnesioriebeckite, clino-ferroholmquistite, leakeite and sodic-pedrizite (and their ferro...

...} \usepackage{amsmath} \pagestyle{empty} \begin{document} \(^{A}(Na_{0.70}K_{0.03})^{B}(Li_{1.34}Na_{0.58}Ca_{0.08})\ (Mg_{1.75}Fe_{1.65}^{3+}Li_{0.88}Fe_{0.32}^{2+}A1_{0.21}Ti_{0.11}Mn_{0.07}^{2+}Zn_{0.01})Si_{8.00}O_{22}(OH_{1.35}F_{0.65})\) \end{document} . Structure refinement of one crystal of pedrizite...