 | | Journal (article/letter/editorial) | | Massachusetts Deer Hill is located in the extreme northwest corner of the F-ryeburg, Maine quadrangle. It...town of Stow, a section of Oxford County. The pegmatite on Deer Hill is often referred to as the Eastman...each. It is customary for quartz obtained from pegmatite pockets to be rather badly flawed or to have inherited...had bsen done by collectors and others on the pegmatite ledge near the top of the hill. In 1956 Phillips...mine feldspar and mica from a relatively large pegmatite which outcrops over an area of several hundred |  | | Journal (article/letter/editorial) | | Tortola comprises the islands of Jost Van Dyke, Little Jost Van Dyke, Tobago, and Little Tobago. SSs"ff»n<«'T...southern promontory is comparatively flat. Jost Van Dyke is a topographical and geological replica of Tortola...Thomas, from which, with the exception of Jost Van Dyke and Great and Little Tobago, they are separated...essentially of diorites, granodiorites, and gabbros, the dyke rocks of pegmatites, felsites, hornblende1 Cleve...heathen " parts of the magma. Among the more unusual field characters presented by the plutonic rocks may be |  | | Report (volume) | | Medd______ Meddelelser nouveau, etc. November Nummer northwest Pamph_______ Pamphlet Mag_________ Magazine...Technological, etc. temporary Tennessee Territory,- Territories, Territorial Texas Territory of Hawaii Topographic...Bulletin, v. 11, nos. 2-4; 17. Berkeley, Calif. Canada Department of Mines and Resources, Mines and Geology...Annual Report for year ending 3/31/47. Ottawa, Canada. Canada. Geological Survey : Bulletin nos. 9-11 ; Economic...48-24. Ottawa, Canada. Canadian Alpine Journal, v. 31. Banff, Alberta. Canadian Field-Naturalist, v. |  | | Journal (article/letter/editorial) | | leucosome; L, Litlefjord Granite; LP, Litlefjord Pegmatite; R, Repvåg Granite; H, Hårvika Granite; V, Revsneshamn...Revsneshamn Granite; VP, Revsneshamn Pegmatite; S, Siedgoaivi Granite; B, Bakfjord Granite 438 ± 2 Ma...in Fig. 1 (modified after Gayer et al., 1985 and field mapping 2002, 2003). 1985; Ramsay et al., 1985a...tectonostratigraphic level of the KNC, Zwann and Van Roermund (1990) recognised a three-phase polymetamorphic...many cases, later deformation obscures much of the field evidence by transposing earlier fabrics. In order |  | | Journal (article/letter/editorial) | | ROBERTSON VAN HORN* Eoweno H. Knaus, (Inioersity of Michigan In the death of ProfessorFrank R. Van Horn on...mineralogy. *n*" *o"r"rT_lonlrv'r'w HonN Frank Robertson Van Horn was born at Johnsonburg,Warren County, New Jersey...Dutch ancestry which he traced to Cornelius Jan van lloorn, who settled in New Amsterdam in 1640. ProfessorVan...for purposes of study and collection. Professor Van Horn delighted in relating interesting incidents...mineralogists from aII over the world, Professor Van Horn was able to develop friendships with many men |  | | Journal (issue) | | 326 Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico...Carlsbad, California A. A. Levinson Calgary, Alberta, Canada Thomas M. Moses New York, New York SUBSCRIPTIONS...the submission of articles on all aspects of the field. Please see the Guidelines for Authors in the Summer...Gems, Los Angeles. Photo © GIA and Harold & Erica Van Pelt. Color separations for Gems & Gemology are by...a grateful subscriber! Sharon Wakefield, G.G. Northwest Gem Lab Boise, Idaho Reply: We thank Sharon for |  | | Journal (article/letter/editorial) | | Because of the weather conditions I did not go on any field trips during January. But, I did have a small hand...York now called the Nassau Mineralogists. My first field trip of the year took place in February when I visited...The rest of the day I spent at the Ridgefield Pegmatite chiseling out very deformed quartz xls, from the...Jersey During March I did much better; I took three field trips. On my first trip I took the Nassau Mineralogists...some apatite. Collecting in Connecticut My next field trip during March was to the Connecticut River Valley |  | | Journal (issue) | | aprivate collection. Photo 0 1985 Harold d Erica Van Pelt-Photographers, Los Angeles. Typesetting for...the submission of articles on all aspects of thc field. Please see the Suggestions for Authors for preparing...VALUABLE ARTICLE AWARD ALICE S. KELLER Editor T he field of gemology, like the people who comprise it, encompasses...as is-once again-the kindness of Harold and Erica Van Pelt for donating so much of their time and expertise...Most of this production has come from two major pegmatite regions: (1) the Araguai-Itinga and Araguai-Salinas |  | | Journal (article/letter/editorial) | | 40 feet wide, and 30 feet deep, excavated in pegmatite. Subordinate cuts surround the main one on the...W JERSEY—"The recent mention of ettringite from Canada (R&M, July 1966, p. 499) prompts this letter and...there were at least six minerals in one low power field namely: hanckcockite crystals garnet—yellow, massive...first recognized the mineral as a new species." CANADA—"Will you please identify enclosed greenish, waxy...I lugged it all the way from Yukon Territory in Canada in the (mistaken?) belief it was jade or nephrite |  | | Journal (article/letter/editorial) | | 39 (Clapboard Ridge Rd.) Infor mation: Howard Van Iderstine, 2 Tulip Lane, Huntington, CT 06484. September...or call, (203) 741-0374 Detroit/Warren 30000 Van Dyke Avenue, Detroit, Michigan 48093 Direct Show Hotline:...September 16, 17—Scarborough (Metro Toronto), Ontario, Canada. 20th Annual show sponsored by the Gem & Mineral...Box 85, Station A, Scarborough, Ontario M1K 5B9 Canada. Downloaded by [University of Florida] at 20:26...Mineralogical SymposiumZeolites—sponsored by the Pacific Northwest Chapter Friends of Mineralogy. Executive Inn, |  | | Journal (article/letter/editorial) | | our Camper to Colorado and now that state rivals Canada in our list of favorite collecting areas. Plentiful...At Hartzel we turned east to the Lake George pegmatite area reported to yield the smoky quartz and amazonite...must have been in the possession of a Mr. L. C. Van Dyke, as it has his name on it. There were only 100Ù |  | | Report (issue) | | Climate and vegetation 16 work Acknowledgments Field 1 17 17 ~ GEOLOGIC FEATURES Previous investigations...__ Roblar leucogranite Other intrusive bodies Pegmatite and aplite dikes Economic significance __ ____...Fluorine minerals ._ Gem minerals Gem-bearing pegmatite deposits Distribution and general features Summaries...quartz crystal) and quartzite Inner zones of pegmatite deposits Massive quartz bodies (including veins)...rocks Meta volcanic rocks - Gabbroic rocks Pegmatite deposits Dumortierite-bearing rock Products and |  | | Report (issue) | | Along the skyline, from left to right, are Jost Van Dyke and Great Thatch Islands of the British Virgin...–23. Photographs of— 1. Water Island Formation, northwest side of Ram Head . . . . . . . . . . . . . . ...in 1990 and 1995. Most of the time spent in the field, starting in 1985, was spent on St. John. The mapping...wife, Mary Louise, for her help as a volunteer field assistant under conditions that were not always...covers both St. Thomas and St. John and is based on field work done mostly in 1956 and 1957. Fragmentary earlier |  | | Report (issue) | | was found at Greaterville in 1924. Pinal County-Canada del Oro placers. Santa Cruz County-Oro Blanco,...quantities with gadolinite and native bismuth in pegmatite. Yavapai County-Bradshaw Mountains, ~wa~low min...Eureka dIstnct. 45 nules west of Prescott, in pegmatite. PYRITE FeS2. Bright brass-yellow. Luster metallic...district, sparingly in oxidized ore. Miami district Van Dyke mine, with chrysocolla. Also from the "79" mine...district, as blue, red, and white material in a pegmatite dike with andalusite. Pinal County-Reported from |  | | Book (volume) | | English translation of a text-book by Cronstedt gave field-spar. In his text-book in English, Kirwan (1784)...its name from the locality Bytown (now Ottawa), Canada. Anorthite is compounded from the Greek negative...separately as barium felspars (p. 166). In some pegmatite microclines the rare alkalies may reach major... The clear yellow crystals from a miarolitic pegmatite are of gem quality and as a consequence have often...Orthoclase microperthite (moonstone) E. Spencer. pegmatite, Ambalangoda, Ceylon (Spencer, 1937). Anal |  | | Journal (issue) | | South ART Artists of Scottsdale TRUE OR FALSE FIELD TRIP Dec. 11-12 — Third annual junior rodeo, Phoenix...division. She left the job to follow Red from one air field to another as he learned to fly successively bigger...or a pencil or watercolor sketch, while in the field. Then, back home in Scottsdale, she develops her...Scottsdale as the hub. Another craftsman in an unusual field is Raymond Phillips Sanderson, who teaches art at...sideline or two. Last Garfield and the SS President Van casion offers. And though O'Connor year, the Segners |  | | Report (issue) | | rapid and inexpensive processes such as photostat, van dyke, and ozalid, but some were duplicated by the more...studied and •pPed in 1947 s. Oeolosical Surve7 field parties ill cooperat.ian with the State BigbwaJ'...Cox, W. B. B. Beu()n, '1'. A. ~teftn, and R. B. Van Alstine. Area studied and •pped 1943-46 b7 D. C...7/23/4S Su.rYeY ccapleted of part ot Coosa coal field, .Ua. !bgt 1 Jlap! dittribllted Oeolo17 of the...the Coal Ci t7 ...S FairYin Basin!, Cooea coal field., St.. Clair Coant7, Alabala, b,r · ll. E. Rothrock |  | | Report (issue) | | was found at Greaterville in 1924. Pinal County.-Canada del Oro placers. Santa Cruz County.-Oro Blanco...quantities with gadolinite and native bismuth in pegmatite. Yavapai County.-Bradshaw Mountains, Swallow mine...Eureka district, 45 miles west of Prescott, in pegmatite. . PYRITE FeS2. Bright brass-yellow. Luster metallic...district, as blue, red, and white material in a pegmatite dike with andalusite. PinaL County.-Reported from...the Bagdad mine. Bradshaw Mountains, in granite pegmatite near Cleator. CLAUDETITE As,03. Colorless to white |  | | Book (edition) | | rock or mineral that is casually picked up in the field. Recently, one researcher has said that the effort...occurrence of this metal, the valley was called "Canada de Hierro," or iron valley. Silver mines of great...sometimes called the Arizona mines, are situated northwest of the Cababi mines about 60 miles, and 40 miles...spangolite. Palmer (1909) describes arizonite from a pegmatite about 25 miles southeast of Hackberry, Mohave...southwestofWickenburg, and one and one-half miles northwest of the Angel mine. Garnet-Mr. J.L. Hubbell of |  | | Journal (issue) | | PLUME R&G KIDS Labradorescence Oregon Agate FIELD TRIP: Sandia Mountains (NM) Travertine FOSSILS A...botryoidal or druzy pockets. (Philip Stephenson photo) FIELD TRIP Feather Ridge Plume Agate...................full-service Utah rock shop by Steve Voynick 12 Field Notes ............................................years for $66.95. Add $15.00 per year postage for Canada and all other foreign countries. EDITORIAL CONTACT...reactions? —Tom Noe via e-mail 6 www.rockngem.com Field Notes.indd 6 LYNN VARON Managing Editor JIM BRACE-THOMPSON | | | Book (edition) | | rock or mineral that is casually picked up in the field. Recently, one researcher has said that the effort...sometimes called the Arizona mines, are situated northwest of the Cababi mines about 60 miles, and 40 miles...spangolite. Palmer (1909) describes arizonite from a pegmatite about 25 miles southeast of Hackberry, Mohave...southwest of Wickenburg, and one and one-half miles northwest of the Angel mine. Garnet—Mr. J.L. Hubbell of...Hurlbut (1936) first describes bermanite from a\ pegmatite on the 7U7 Ranch, Yavapai County. 1938 The orebody |  | | Book (edition) | | contained a large mass of coarse orthoclaserich pegmatite associated with the quartz monzonite porphyry...about 10 miles wide by 75 miles long, extending northwest and southeast from Cameron along the Little Colorado...in granite in sericitized veins (Schwartz, pegmatite (Frondel, 1964). Cerbat Mountains, Kingman Feldspar...Near Willow Springs Ranch, Oracle Junction, in pegmatite with schorlite (Robert O’Haire, pers. comm., 1972)... 1960). Yavapai County: Eureka district, in pegmatite knots on the 7U7 ranch near Bagdad, with triplite |  | | Book (edition) | | Anthony, Sidney Williams, and Richard Bideaux. The field of mineralogy has undergone many changes since the...six other special lists of minerals, such as pegmatite minerals, contact-metamorphic minerals, and secondary...(1970) of blue, red, and white material in a pegmatite dike with andalusite from Grand Wash Cliffs, Red...labradorite, at Red Mountain, twenty-five miles northwest of Flagstaff. Red Mountain is an eroded cinder...Spring, in the foothills, probably as a vein pegmatite dike. This amethyst-bearing property is owned |  | | Journal (article/letter/editorial) | | areas in and adjacent to the Palmerville Fault northwest of Chillagoe. Regional geophysical studies include...02:41 21 December 2014 Mountain Cr Congl Mbr Van Dyke lilh Mbr Quartzose flysch, shale Basalt Conglomerate...Quartz-intermediate greywacke MF Mulgrave Formation VM Van Dyke Litharenite Member (Mulgrave Formation) MC Mountain...correlative of the Quadroy Conglomerate, 9 km north-northwest of Chillagoe, contains limestone clasts in which...basement rocks adjacent to the Palmerville Fault northwest of Chillagoe. They contain low-grade metamorphic | | | Book (edition) | | contained a large mass of coarse orthoclaserich pegmatite associated with the quartz monzonite porphyry...about 10 miles wide by 75 miles long, extending northwest and southeast from Can1eron along the Little Colorado... Rare Metals mine and Columbite prospect, in pegmatite with gadolinite (Heinrich, 19?0) ;_ McCo_nnico...district, Consolidated Spar mine, 111 granite . pegmatite (Frondel, 1964). Cerbat Mountains, Kingman Feldspar...Near Willow Springs Ranch, Oracle Junction, in pegmatite with schorlite (Robert O'Haire, pcrs. con1m., |
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