American Mineralogist

Volume 70, Issue no. 0708 : July - August 1985

REGULAR ARTICLE

663 Quantitative determination of mineral content of geological samples by X-ray diffraction

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668 Ultramafic inclusions in late Miocene alkaline basalts from Fry and Ruby Mountains, San Bernardino County, California

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678 Experimental determination of pyroxene compositions in the system CaO-MgO-Al2O3-SiO2 at 900-1200°C and 10-15 kbar using PbO and H2O fluxes

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696 Ideal site mixing in solid solutions, with an application to two-feldspar geothermometry

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702 Error estimation and empirical geothermobarometry for pelitic systems

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710 Surinamite in pseudomorphs after cordierite in polymetamorphic granulites from Zambia

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714 An experimental investigation of thermodynamic mixing properties and unit-cell parameters of forsterite-monticellite solid solution

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723 Methods for determination of composition and intracrystalline cation distribution in Fe-Mn and Fe-Ni silicate olivines

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729 “Site occupancy and two-phase character of “”ferrifayalite”””

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737 Synthetic laihunite ([ ]xFe2+2-3xFe3+2xSiO4), an oxidation product of olivine

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747 Geometry of the octahedral coordination in micas: a review of refined structures

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758 Solid state 29Si NMR examination of the 2:1 ribbon magnesium silicates, sepiolite and palygorskite

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767 Carlosturanite, a new asbestiform rock-forming silicate from Val Varaita, Italy

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773 Carlosturanite: HRTEM evidence of a polysomatic series including serpentine

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782 Thermodynamics of the lambda transition and the equation of state of quartz

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794 A spectroscopic study of irradiation coloring of amazonite: structurally hydrous, Pb-bearing feldspar

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805 Dependence of chemistry on genesis in zeolites: multivariate analysis of variance and discriminant analysis

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814 Order-disorder structure and the internal texture of stilbite

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822 The origin of sector twinning in harmotome

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829 Luminescence, color and fission track zoning in apatite crystals of the Panasqueira tin-tungsten deposit, Beira-Baixa, Portugal

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838 The solubility and stability of scorodite, FeAsO4·2H2O

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845 Freedite and thorikosite from Långban, Sweden, and Laurion, Greece: two new species related to the synthetic bismuth oxyhalides

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849 New data on lacroixite, NaAlFPO4

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856 Polymorphism of samarskite and its relationship to other structurally related Nb-Ta oxides with the α-PbO2 structure

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NEW MINERAL NAMES

871 NEW MINERAL NAMES

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NOTES

883 NOTICES

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BOOK REVIEW

881 BOOK REVIEWS

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MEMORIAL

867 Memorial of Ernest Emerson Fairbanks

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TABLE OF CONTENTS
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Table of Contents

AmMin submission to acceptance/”first publication” is at a record average of about three to four months. Our acceptance to “final” publication is presently another 13 months on average.

Special Collections

American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.