..., a mineral outside of this system. No success has been obtained in attempting to write a formula showing a simple coupling arrangement involving Ca-X and Na-Y. Thus the varulites are high in Na and low in Fe‴. Nevertheless it seems clear that these minerals are all members of one monoclinic isotypous series...

... in these nodules. One of them is beusite–wyllieite–sicklerite-rich (BWS), with varulite and staněkite among the main products of replacement, Fe/(Fe + Mn) values between 0.46 and 0.48 for sicklerite, and MgO values up to 2.14 wt%. The other association is lithiophilite–sicklerite-rich (LS), with varulite...

...) octahedral sites. For phosphates, the root name is defined on the basis of the M (2) content, allowing a valency-imposed double-site occupancy for that site: M 2 (Fe 3+ Fe 3+ ) = alluaudites s.l ., M 2 (Fe 2+ Fe 3+ ) = hagendorfites s.l ., and M 2 (Mn 2+ Fe 3+ ) = varulites s.l . The root-name is used...

...Joel D. Grice; Pete J. Dunn; Robert A. Ramik Abstract Jahnsite-(CaMnMn), a new mineral species from Mangualde, Beira, Portugal, occurs as equant, brownish yellow crystals to 0.5 mm, associated with phosphosiderite, zodacite, varulite, and microcline. The mineral is transparent and has a vitreous...

...Paul B. Moore Abstract Three-dimensional crystal structure analysis of an alluaudite from the Buranga pegmatite, Central Africa, elucidated the crystal chemistry of the alluaudites (hagendorfite, hiihnerkobelite, varulite, mangan-alluaudite, alluaudite, and the arsenate mineral caryi-nite). R ( hkt...

... that it was different from type arrojadite and similar to the material from Norrö, Sweden and to some varulites. Lindberg's work was valuable in helping to clear up some confusion, but a new mineral name should not have been suggested on the basis of such scanty data. Nevertheless, the name was enshrined in Danas...

... . Fisher , D.J. ( 1957 ): Alluaudites and varulites . Am. Mineral . 42 , 661 – 664 . Fisher , D.J. ( 1958 ): Pegmatite phosphates and their problems . Am. Mineral . 43 , 181 – 207 . Fontan , F. ( 1978 ): Etude minéralogique et essais expérimentaux sur des phosphates de...

... – 2764 . Björling , C.O. , Westgren , A. ( 1938 ): Minerals of the Varuträsk pegmatite. IX. X-ray studies on triphylite, varulite, and their oxidation products . Geol. Fören. Förhandl ., 60 , 67 – 72 . Bragg , W.L. , Brown , G.B. ( 1926 ): Die Struktur des Olivins...

... is shown as a thin solid line in gold. Alluaudite ( Moore 1971a ) ML-P40 and “ferroalluaudite” ML-P14 ( Corbin et al. 1986 ) are predominantly Fe 3+ in the M2 site. Two samples of hagendorfite, DD184 and DD237 ( Redhammer et al. 2005 ), and varulite DD321 contain multiple doublets of Fe 2+ and Fe 3...

... of fupingqiuite As a side effect of the new classification of alluaudites, the mineral fupingqiuite (IMA 2016-087; see CNMNC Newsletter 35) is not a separate species from varulite and has been discredited. ERRATUM The file on jahnsite-(NaMnMg) published in Newsletter 43 was wrong. The correct one...

... of alluaudites, the mineral fupingqiuite (IMA 2016-087; see CNMNC Newsletter 35) is not a separate species from varulite and has been discredited. The file on jahnsite-(NaMnMg) published in Newsletter 43 was wrong. The correct one is included in this Newsletter. IMA No. 2018-036 Hg 3...

..., vanmeersscheite, vantasselite. varulite, whitlockite, whitmoreite, wooldridgeite, xenotime-(Yb) and zapatalite. The data used to calculate the Gladstone–Dale compatibility of the phosphate minerals were taken from the International Encyclopedia of Minerals , which contains 437 such species. Only 348...

..., Pollc: pollucite, Py: pyrite, Qng: qingheiite, Qtz: quartz, Sk: sicklerite, Spd: spodumene, Sps: spessartine, Src: sarcopside, Srl: schorl, Trph: triphylite, Trpl: triplite, Tur: tourmaline, Ura: uraninite, Vr: varulite, Wolf: wolfeite, Wyl: wyllieite, Zrn: zircon, Zws: zwieselite. n.d.: not determined...

... from these main constituents, Li+, K+, Mg 2+ , Zn 2+ and Al 3+ are found in natural alluaudite-type compounds ( Moore, 1971 ; Moore & Ito, 1979 ). Depending on chemistry and cation site distribution on M(1) and M(2), mineral species are classified into varulite, alluaudite, ferroalluaudite...

... studies on triphylite, varulite, and their oxidation products . Geol. Fören. Förhandl ., 60 , 67 – 72 . Bragg , W.L. & Brown , G.B. ( 1926 ): Die Struktur des Olivins . Z. Kristallogr ., 63 , 538 – 556 . Burns , R.G. ( 1970 ): The crystal field spectra and evidence...

... ], and varulite [NaCaMnMn 2 (PO 4 ) 3 ]. Over the past 20 years, many synthetic alluaudite-type phosphates, arsenates, and molybdates have been reported (see Keller et al. 1981 ; Riffel et al. 1985 ; Keller and Hess 1988 ; Auernhammer et al. 1993 ; Solodovnikov et al. 1998 ; Hatert et al. 2000...