Emerson, Benjamin K. (1895) A mineralogical lexicon of Franklin, Hampshire, and Hampden counties, Massachusetts. Bulletin Vol. 126. US Geological Survey doi:10.3133/b126

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	*Dana, James D. (1885) Manual of Mineralogy and Lithology* (5th ed.) Trübner & Co., London.**	Book (edition)
	hi the reno- rations }iavf‘ luM^n introduced, an im- been adopted, tlie talde for the and tln^ chapter... 1 . SiLDLVTLS. SILICA. TAGB Quartz 2 dd Opal 23 b * 2 Ceil oral . SILICATES. Remarks 212... MINERALOGY. Minerals. Minerals nT(‘, llio plants an...portant for (h(‘ imdal they (‘ontain. gentn-ally in an impure state from ili(‘ \|)i'^"s<,!uee of oilier minerThe...tlak(‘S when it snows; the stre.ams bia^ome coated with an aggregation of crystals called ico and wnudows are
	*Miller, William J. (1939) The Story of Our Earth* - The Science of Geology the History of the World Can Be Read from Rocks and Mineral Deposits. P. F. Collier & Son Corporation.**	Book
	picture) 32 33 48 49 49 64 64 65 96 97 97 128 “os AN UPBEND FOLD oR ANTICLINE IN ” MARYLAND i LEDGE oF...able to interpret present-day earth features only by an understanding of earth changes in the past. ; Geology...all fossils represented remains of organisms of an earlier cre- INTRODUCTION ation which were buried...also very abundant. When sediment hardens around an imbedded organism, and the organism then decomposes...petrifaction which takes place when a plant or hard part of an animal has been replaced, particle by particle, by
	*Gary, Margaret, McAfee, Robert Jr., Wolf, Carol L. - Eds.* (1972) Glossary of Geology. American Geological Institute, Washington, D. C.**	Book
	the proper (1920). And Holmes was quoting in turn an earlier geological application of the quotation from...if it were not for the oc¬ casional appearance of an authoritative glos¬ sary, our language—which, as...language), and in their growth and evolution can provide an engrossing record of historical change and development...need— for a new word, or for a change of meaning of an old and established word, must rest on him who proposes...proposes a new word or a modification of mean¬ ing of an old word. Can the proposer marshal sufficient evidence

Opal-AN from Leverett, Franklin County, Massachusetts, USA

Opal-AN from
Leverett, Franklin County, Massachusetts, USA