...J. T. Lindbloom; G. V. Gibbs; P. H. Ribbe Abstract The crystal structure of hurlbutite, CaBe 2 P 2 O 8 ( a = 8.299Å; b = 8.782 Å; c = 7.798 Å; β = 90.5°; space group P 2 1 / a ) has been refined to an R factor of 0.062. The refinement converged only when the signs of the z -coordinates reported...

...Mary E. Mrose Abstract Hurlbutite, CaBe 2 (PO 4 ) 2 , is a new mineral from the Smith mine, Chandler's Mill, Newport, New Hampshire. Crystals arc orthorhombic and stout prismatic [001] in habit with {001}, [010|, {110}, {101}, {201}, and {311} doubtful. Faces often delicately etched with striations...

... II. ( c ) Strontiohurlbutite associated with secondary phases (beryl, hurlbutite, hydroxylapatite, and muscovite) in the fractures of primary beryl from zone IV. Abbr.: Qz = quartz, Srh = strontiohurlbutite, Brl-P = primary beryl, Brl-S = secondary beryl, Phn = phenakite, Ab = albite, Hlb...

...Fig. 6 Comparison between the structures of (a) CaBe 2 P 2 O 8 (hurlbutite), (b) CaB 2 Si 2 O 8 (danburite), and (c) KAlSi 3 O 8 (orthoclase). Views perpendicular to the crankshaft chain axis. ...

...Fig. 5 Microscopic images and BSE images of primary beryl with alteration products from sample NP–54 in zone IV. (a, b) Microscopic images of massive fractured beryl with secondary apatite and hurlbutite. (c, d) BSE images of Cs-poor marginal zones and veinlets (Brl–S) in primary beryl. (e) BSE...

... of the late stages of certain pegmatites, hurlbutite, CaBe 2 (PO 4 ) 2 , becomes stable, whereas under high activities of both P 2 O 5 and F 2 O (sub -1) , herderite, CaBePO 4 F, becomes stable in very late-stage pegmatites and in greisens. Under conditions more F 2 O (sub -1) -rich than those normally...

...〉 T 2 〈Ge-O〉 T 1 〈Ge-O〉 T 2 SGSP 2.626 1.822 1.824 1.627 1.629 - - SGGP 2.630 1.823 1.826 - - 1.746 1.750 These structures are compared in detail with hurlbutite (CaBe 2 P 2 O 8 ), another paracelsian-type structure, and with danburite (CaB 2 Si 2 O 8 ) whose T 3+ , T 4+ ordering is distinctly...

... that occur at the locality include hurlbutite, tiny beryl-lonite crystals, small twinned crystals of amblygonite and brazilianite as small single crystals and as aggregates of parallely intergrown crystals up to an inch in length. Copyright © 1953 by the Mineralogical Society of America 1953...

... pegmatite in the Black Hills of South Dakota ( Peacor et al. 1983 ). This monoclinic phase is closely associated with altered beryl, and with other secondary minerals such as tiptopite, whitlockite, montgomeryite, carbonate-apatite, hurlbutite, roscherite and englishite, but it formed very late...

...) 90.21(2) 746.0(4) 4 Smith (1953) ; Chiari et al. (1985) * CaBe 2 P 2 O 8 (hurlbutite) P 2 1 / a 8.299(1) 8.782(2) 7.798(3) 90.5 568.31 4 Bakakin & Belov (1960) ; Bakakin et al. (1974) ; Lindbloom et al. (1974) * SrGa 2 Si 2 O 8 P 2 1 / a 9.0009(9) 9.4840(8) 8.3987...

... data . Journal of Applied Crystallography , 44 , 1272 – 1276 . Mrose M.E. ( 1952 ) Hurlbutite, CaBe 2 (PO 4 ) 2 , a new mineral . American Mineralogist , 37 , 931 – 940 . Pouchou J.L. Pichoir F. ( 1984 ) Extension des possibilités quantitatives de la...

.... , Newry, Maine: Palache & Shannon 1928 ; Viitaniemi, Finland: Volborth 1954 , Lahti 1981 ; Meldon, England: von Knorring & Condliffe 1984 ; Norrö, Sweden: Nysten & Gustafsson 1993 ; Beauvoir, France: Charoy 1999 ). The general sequence beryllonite – hurlbutite – F-bearing...

..., breithauptite, eskolaite, goethite, haüyne, hurlbutite, mandarinoite, melonjosephite, millerite, moissanite, nielsbohrite, sillimanite or wollastonite) or companies, societies, journals and institutions ( e.g . afmite, imgreite, minrecordite, museumite, nimite, philolithite or tsumcorite), as well as related...