Issues
Volume 72, Number 1-2
1 February 1987

ISSN 0003-004X
EISSN 1945-3027
In this Issue
Articles
Darken's quadratic formalism and the thermodynamics of minerals
American Mineralogist February 01, 1987, Vol.72, 1-11. doi:https://doi.org/
Compositions of anhydrous and hydrous melts coexisting with plagioclase, augite, and olivine or low-Ca pyroxene from 1 atm to 8 kbar; application to the Aleutian volcanic center of Atka
American Mineralogist February 01, 1987, Vol.72, 12-28. doi:https://doi.org/
Hydration of corundum-bearing xenoliths in the Qorqut granite complex, Godthaabsfjord, West Greenland
American Mineralogist February 01, 1987, Vol.72, 29-38. doi:https://doi.org/
Metamorphic hydrology at 13-km depth and 400-550 degrees C
American Mineralogist February 01, 1987, Vol.72, 39-58. doi:https://doi.org/
Mineral chemistry and petrogenesis of carbonatite intrusions, Perry and Conway counties, Arkansas
American Mineralogist February 01, 1987, Vol.72, 59-66. doi:https://doi.org/
Quartz-fayalite-iron and quartz-fayalite-magnetite equilibria and the free energy of formation of fayalite (Fe 2 SiO 4 ) and magnetite (Fe 3 O 4 )
American Mineralogist February 01, 1987, Vol.72, 67-75. doi:https://doi.org/
Calibration of the graphite-methane buffer using the fH 2 sensors at 2-kbar pressure
American Mineralogist February 01, 1987, Vol.72, 76-81. doi:https://doi.org/
Determination of ionic radii from cation-anion distances in crystal structures
American Mineralogist February 01, 1987, Vol.72, 82. doi:https://doi.org/
Importance of the size of the unit in models of ordering behavior for albite
American Mineralogist February 01, 1987, Vol.72, 83-88. doi:https://doi.org/
Synchrotron radiation XANES spectroscopy of Ti in minerals; effects of Ti bonding distances, Ti valence, and site geometry on absorption edge structure
American Mineralogist February 01, 1987, Vol.72, 89-101. doi:https://doi.org/
A review of Moessbauer data on trioctahedral micas; evidence for tetrahedral Fe (super 3+) and cation ordering
American Mineralogist February 01, 1987, Vol.72, 102-112. doi:https://doi.org/
"Eastonite" from Easton, Pennsylvania; a mixture of phlogopite and a new form of serpentine
American Mineralogist February 01, 1987, Vol.72, 113-125. doi:https://doi.org/
Observations on terrestrial ureyite and ureyitic pyroxene
American Mineralogist February 01, 1987, Vol.72, 126-136. doi:https://doi.org/
An unusual pyroxene, melilite, and iron oxide mineral assemblage in a coal-fire buchite from Buffalo, Wyoming
American Mineralogist February 01, 1987, Vol.72, 137-147. doi:https://doi.org/
Chemistry and structure of esseneite (CaFe (super 3+) AlSiO 6 ), a new pyroxene produced by pyrometamorphism
American Mineralogist February 01, 1987, Vol.72, 148-156. doi:https://doi.org/
Petedunnite (CaZnSi 2 O 6 ), a new zinc clinopyroxene from Franklin, New Jersey, and phase equilibria for zincian pyroxenes
American Mineralogist February 01, 1987, Vol.72, 157-166. doi:https://doi.org/
Three tridymite structural modifications and cristobalite intergrown in one crystal
American Mineralogist February 01, 1987, Vol.72, 167-169. doi:https://doi.org/
Fibers of dumortierite in quartz
American Mineralogist February 01, 1987, Vol.72, 170-172. doi:https://doi.org/
Refinement of the crystal structure of ramsayite (lorenzenite)
American Mineralogist February 01, 1987, Vol.72, 173-177. doi:https://doi.org/
Solid solution in, and classification of, gossan-derived members of the alunite-jarosite family, Northwest Queensland, Australia
American Mineralogist February 01, 1987, Vol.72, 178-187. doi:https://doi.org/
TEM observations and X-ray crystal-structure refinement of a twinned dolomite with a modulated microstructure
American Mineralogist February 01, 1987, Vol.72, 188-193. doi:https://doi.org/
Magnetic ordering in Al-rich goethites; influence of crystallinity
American Mineralogist February 01, 1987, Vol.72, 194-200. doi:https://doi.org/
Barian tomichite, Ba (sub 0.5) (As 2 ) (sub 0.5) Ti 2 (V,Fe) 5 O 13 (OH), its crystal structure and relationship to derbylite and tomichite
American Mineralogist February 01, 1987, Vol.72, 201-208. doi:https://doi.org/
Crystal structure of the apatite-like compound K 3 Ca 2 (SO 4 ) 3 F
American Mineralogist February 01, 1987, Vol.72, 209-212. doi:https://doi.org/
Ribbeite, a polymorph of alleghanyite and member of the leucophoenicite group from the Kombat Mine, Namibia
American Mineralogist February 01, 1987, Vol.72, 213-216. doi:https://doi.org/
Wendwilsonite, the Mg analogue of roselite, from Morocco, New Jersey, and Mexico, and new data on roselite
American Mineralogist February 01, 1987, Vol.72, 217-221. doi:https://doi.org/
New mineral names
F. C. Hawthorne; K. W. Bladh; E. A. J. Burke; E. S. Grew; R. H. Langley; J. Puciewicz; A. C. Roberts; R. A. Schedler; J. E. Shigley; D. A. Vanko
American Mineralogist February 01, 1987, Vol.72, 222-230. doi:https://doi.org/
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High-pressure minerals
Oliver Tschauner
Electrical conductivity studies on silica phases and the effects of phase transformation
George M. Amulele; Anthony W. Lanati; Simon M. Clark
Chemical and textural relations of britholite- and apatite-group minerals from hydrothermal REE mineralization at the Rodeo de los Molles deposit, Central Argentina
Melanie Lorenz; Uwe Altenberger; Robert B. Trumbull; Raúl Lira; Mónica López de Luchi; Christina Günter; Sascha Eidner
Intra-eruptive trachyte-phonolite transition: Natural evidence and experimental constraints on the role of crystal mushes
Marco Brenna; Alessio Pontesilli; Silvio Mollo; Matteo Masotta; Shane J. Cronin; Ian E.M. Smith; Mohammed Rashad Hassan Moufti; Piergiorgio Scarlato
REE-, Sr-, Ca-aluminum-phosphate-sulfate minerals of the alunite supergroup and their role as hosts for radionuclides
Nicholas D. Owen; Nigel J. Cook; Mark Rollog; Kathy J. Ehrig; Danielle S. Schmandt; Rahul Ram; Joël Brugger; Cristiana L. Ciobanu; Benjamin Wade; Paul Guagliardo