American Mineralogist
REGULAR ARTICLE
1 Tunisite, a new carbonate from Tunisia
14 Yagiite, a new sodium-magnesium analogue of osumilite
19 Crystal structures and mineral chemistry of double-salt hydrates: I. Direct determination of the crystal structure of tamarugite
31 The crystal structure of sapphirine
50 “The structure of “”imogolite”””
72 Mössbauer study of micas and their potassium-depleted products
85 Statistical analysis and discussion of mean Al/(Si-O) bond distances and the aluminum content of tetrahedra in feldspars
95 Annealing of oligoclase at high pressure
101 Refinement of the crystal structure of osumilite
117 Optical phenomena associated with Brazil-twin boundaries in quartz
134 Geology and chemical mineralogy of the Zhob Valley chromite deposits, West Pakistan
149 Temperature controls on aragonite-calcite transformation in aqueous solution
156 Unit-cell dimensions, optical properties, halogen concentrations in several natural apatites
163 Calculated powder patterns: Part II. Six potassium feldspars and barium feldspar
182 Authigenic zeolites in zeolitic palagonite tuffs on Oahu, Hawaii
198 Palygorskite: New X-ray data
206 Kaolinite and anauxite in the Ione Formation, California
212 Two-amphibole assemblages in the system actinolite-hornblende glaucophane
238 Unit-cell parameters of synthetic diopside-hedenbergite solid solutions
246 X-ray diffraction study of olivine solid solution series
251 Rhodesite from Trinity County, California
256 Electron microprobe study of prehnite and pumpellyite from the Karmutsen Group, Vancouver Island, British Columbia
267 Eclogite inclusions in kimberlite pipes at Garnet Ridge, Northeastern Arizona
286 Retention of alkalis by calc-alkalic rhyolites during crystallization and hydration
296 About the structure of iowaite
299 On the valence of iron in tripuhyite: A Mössbauer study
302 New data on tychite
306 Chemical composition and optical properties of yugawaralite from the type locality
309 Crystallographic nomenclature and twinning in the humite minerals
313 A rapid visuo-colorimetric method for the determination of phosphate in phosphatic rocks
317 Gel preparation of starting materials in iron-containing silicate systems
320 Pumpellyite of deuteric origin
325 Crystallographic tables for the rhombobedral carbonates: A correction
NEW MINERAL NAMES
326 New Mineral Names
MINERALOGICAL NOTES
292 MINERALOGICAL NOTES: A study of some gold mine diamonds
NOTES
334 Notices
BOOK REVIEW
331 Book Reviews
TABLE OF CONTENTS
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SPECIAL COLLECTIONS
Table of Contents
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American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.