	*Pough, Frederick H. (1996) A Field Guide to Rocks and Minerals* (5th ed.) Houghton Mifflin Company, Boston & New York.**	Book (edition)
	great changes of emphasis in mineral collecting and an unforeseen growth in the number of collectors. Mineral...Africa, and Asia have become significant sources. An increasing recognition of investment values in fine...carefully preserved to arrive on a dealer's shelf in an unblemished state. Would that the old-time miners...common can't-be-bothered attitude can be replaced by an enlightened recognition of the operators' public... CONTENTS Preface iii About This Book xi PARTI An 1 Introduction to the Study of Rocks and Minerals
	*(1979) July - August 1979. The Mineralogical Record* Vol. 10 (4) The Mineralogical Record, Inc.**	Journal (issue)
	visit the Royal Ontario Museum in Toronto know what an outstanding collection of mineral ogical and geological...to be entirely dismantled and put into storage for an indeterminate period of time. Plans also call for...approximately 1,000 m above sea level. Chariarcillo boasts an unusually arid climate and little or no vegetation...visit. Although an exceptional suite of Chanarcillo speci mens was once on display here, an unfortunate...assistance and counsel of Juan Callejas, his friend and an old miner. They obtained a title to the mine, and
	*Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy* (8th ed.) Wiley-Interscience. p.1872**	Book (edition)
	role in naming the plants and animals, also showed an interest in classifying the minerals. His natural...synonymy was improved and extended. The work became an international classic for over 50 years, due to the...Connecticut. Luiz A. D. Menezes: Belo Horizonte, Minas Gerais, Brazil. William C. Metropolis: Mineralogical Museum...XV xvi Introduction international members and an affirmative response of at least two-thirds of those...Once accepted, the information must be published in an appropriate journal within two years or the CNMMN
	*Clark, A. M. (1993) Hey's Mineral Index* - Mineral Species, Varieties and Synonyms (3rd ed.) Natural History Museum, London.**	Book (edition)
	publica1ions) 'Third edi1ion'-Forcword. Rev. ed. of: An index of mim:ral species & varie1ics arranged chemically/...of Minemls was published and it soon proved to be an important and standard reference work for mineralogists... The number of known species is now around 3500- an increase of some 600 in the last ten years - and...Embrey obtained an on-line version of the second edition and its appendices by editing an optically-character-read...volume is the third edition (retitled) of M. H. Hey"s An Index of Mineral Species and Varieties Arranged Chemically

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Opal-AN from Taquaral, Itinga, Minas Gerais, Brazil

Opal-AN from
Taquaral, Itinga, Minas Gerais, Brazil