...Elena S. Zhitova; Sergey V. Krivovichev; Igor Pekov; H. Christopher Greenwell Abstract Hydrotalcite, ideally [Mg 6 Al 2 (OH) 16 ](CO 3 )(H 2 O) 4 , was studied in samples from Dypingdal, Snarum, Norway (3 R and 2 H ), Zelentsovskaya pit (2 H ) and Praskovie–Evgenievskaya pit (2 H ) (both Southern...

...Stuart J. Mills; Andrew G. Christy; Ralf T. Schmitt Abstract Two samples of hydrotalcite, probably worked on by Carl Christian Hochstetter, have been discovered in the Museum für Naturkunde Berlin and given neotype status by the IMA CNMNC (proposal 15-J). The two samples from Snarum, Norway, have...

...Gunnar Raade Abstract The new mineral dypingite was found in the Dypingdal serpentine-magnesite deposit, Snarum, South Norway, where it occurs as a thin cover on serpentine. It is of late secondary origin, deposited from cold, leaching solutions. Chemical analysis of 100 mg of handpicked material...

... the composition and the degree of order of the layer cations and between the composition and the stacking of the layers. Our study was performed on a natural sample (N1) from Snarum (Norway), obtained from Muséum des Sciences Naturelles de Paris (Galerie de Minéralogie, sample 68.302) and on two...

... .4H 2 O, is much rarer than hydromagnesite. It was first described by Raade (1970 ) as an alteration product encrusting serpentine at the Dypingdal serpentine-magnesite deposit at Snarum, Norway, and has subsequently been reported from a handful of generally similar environments. The only previously...

... (2HT N ) from Snarum, Norway ( Stanimirova, 2001 ). They represent scaly aggregates of clear, fine plates (up to 2 mm) having a vitreous to greasy lustre and perfect cleavage. Three Mg-Al-CO 3 compounds, with Mg/Al = 2:1 (2HT), 3:1 (3HT) and 3.7:1 (3.7HT), were prepared following the procedure...

... completion. The following standards were used: benzoic acid, acetanilide and hydrotalcite from Snarum, Norway. The CHN analysis shows the absence of N, and ICP-OES the absence of Be and B in akopovaite. Certain parts of the mineral aggregates (without weighing) were placed into polypropylene tubes...

... 2004 © 2005 American Mineralogist 2005 Our starting materials were natural samples of polycrystalline magnesite from Snarum, Norway (34.72 wt% MgO, 0.05 wt% CaO, 0.61 wt% FeO). These starting materials were the same as those used by Williams et al. (1992) , who confirmed sample purity via...

... group. IMA 15-J: Hydrotalcite neotypes Proposal 15-J is accepted, and the hydrotalcite samples MFN_MIN_1998_2751 and MFN_MIN_1998_2758, labelled by Gustav Rose and deposited at the Museum für Naturkunde Berlin, are defined as neotypes. The type locality is Snarum, Modum, Buskerud, Norway...

... better than chrysotile. Massive yellowish-green serpentine from Snarum, Norway (1966.500), coexisting with hematite, and “precious” massive serpentine from Newfoundland (1917-232) were found to lack the distinctive XRD reflection of antigorite. Figure 6 Mössbauer spectra of four selected samples...

... which result in differences in initial saturation conditions. Experiments were performed with synthetic HAP (from Bio-Rad Laboratories Hercules, California, USA), natural CAP (from Snarum, Norway), and natural FAP (from Perth of Wilberforce, Ontario, Canada). Thorough descriptions of the HAP...

... smooth before analysis and then gold coated. The list of all the calibration standards employed (fully described in Oberti et al. 1999 ; Ottolini and Oberti 2000 ; Ottolini et al. 2002 ) was the following: Snarum apatite, NIST SRM 610, LL Std b, hellandite-(Ce) from Capranica, Pyrex glass, topaz...

... (OH) 16 [CO 3 ]·4H 2 O. Hydrotalcite was the first LDH phase to be discovered ( Hochstetter, 1842 ) as contorted, lamellar-to-fibrous white masses of waxy or pearly lustre in serpentinite from Snarum, Norway. It should be noted, however, that Hochstetter regarded the CO 2 content in his analyses...

... Tourmaline species Rock Type, Locality Be, ppm (n) Source Note: n – number of samples. “Black” (schorl?) Pegmatite, Snarum,, Norway 4 Goldschmidt (1958) “Red” (elbaite?) Pegmatite, San Diego, California, USA 120 Not specified Miscellaneous plutonic rocks 5.0(2)–17.4(9...

.... and Woolley A.R. ( 1990 ) The carbonatites and fenites of Chipman Lake, Ontario . The Canadian Mineralogist , 28 , 241 – 250 . Raade G. ( 2013 ) Hydrotalcite and quintinite from Dypingdal, Snarum, Buskerud, Norway . Norsk Bergverksmuseum Skrifter , 50 , 55 – 57 . Ramesh T.N...