 | Ogorodova, Lyubov P., Vigasina, Marina F., Melchakova, Lyubov V., Kiseleva, Irina A., Krupskaya, Victoria V., Bryzgalov, Igor A. (2016) Natural Mg-Fe clinochlores: Enthalpies of formation and dehydroxylation derived from calorimetric study. American Mineralogist, 101 (6) 1431-1437 doi:10.2138/am-2016-5572 | Journal (article/letter/editorial) | | different composition. Keywords: Clinochlore, chlorite, thermochemistry, microcalorimetry, enthalpy of...Introduction Clinochlore is a widespread magnesian chlorite, which is formed during the processes of hydr...Fe2+ in this position almost always presents. The chlorite structure consists of three-layer packages of...interlayer hydroxide sheets. The minerals of this group have numerous polytypic modifications with different...of water removal through heating of a magnesian chlorite (dehydroxylation of interlayer * E-mail: logor@geol |  | | Book (edition) | | chlorine as they separate from the solution will group themselves together and gradually build up a definitely...faces a definite symmetry which enables one to group them into different classes. The various operations...symmetry (point group) but also the far more complicated internal symmetry (space group). A brief explanation...and restricted sense. Thus, a form consists of a group of crystal faces all of which have the same relation...features on many crystals is the arrangement of a group of faces in such a manner that their intersection |  | | Report (volume) | | York. Am Nat American nturali t. alem, Ma ., and el ewhere. Am Ph Soc, Tr ; Pr American Philoopbi a l...che Zeftch rlft. Berlin. P alaeon tographica. Ctl el. Penn Mo nthly. Philadelphia, Pa. tate l\Iining P...United States [War Department] , Pacific R a ilroad El.."l)lora tion ( U. S., 33d Congress, 1 t session...microscopic structure or some rocks or the Quebec group. Can 0 S, Rp Prog 18 (}-2: A ~23 (1883) 3a On the...Superior. J 0 8. 322-325 (1900) OOa (nut! Barlow , A. El.) (lt cpor t OC field work In tb Haliburton area |  | | Book | | in 1950—just a little over 20 years ago— that a group of geologists in Tulsa, Oklahoma, recognized the...Cambrian. abukumalite A mineral of the apatite group: (Ca,Y)5(Si04, Acadian orogeny A middle Paleozoic...[geo/], tarchs are of algal affinity, but the group is artificial. They acidite A silicic rock, range...acmite A brown or green mineral of the clinopyroxene group: actine (a) One of the individual branches of the...sometimes difficult to distinguish of the amphibole group: Ca2(Mg,Fe)5Si8 022(0H)2. from alete spores. Cf: |  | | Book | | The magical all ure of the cuclase 407 The exotic group of the garnets 408 Garnets of the pyralspite series...bamb11rro of the Lavra do Jonas 577 The Pegmatitic Province of Paraiba, Rio Grande do Norte and Ceara 586...diversified mica group 602 The clay mineral groufa 604 The tectosilicate subc ass 605 The feldspar group 608 The...Helvite 611 Scapolite 612 The surprising zeolite group 619 The large quartz family 624 Rock crystal 630...Tatiana Menezes. 11 Carlos Cornejo panning gra,·el in a brook close to Ouro Preto, ~1inas Gerai , in |
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