 | | Journal (article/letter/editorial) | | New Hampshire Mineral Locality Index Downloaded by [University of Newcastle, Australia] at 15:01 05...Grafton County. Rob Lawrence photo, courtesy Bob Whitmore. 242 ROCKS & MINERALS lthough New Hampshire...reading Jackson (1844) on the mineralogy of New Hampshire that even at this early date there was already...activity produced new localities, renewed some old localities, and resulted in new minerals being discovered...LOCATIONS BY COUNTY Belknap County Alton area: arsenopyrite, galena, quartz (crystals), sillimanite (Avery |  | | Report (volume) | | Bulletin 931-P MICA-BEARING PEGMATITES OF NEW HAMPSHIRE A PRELIMINARY REPORT BY J. C. OLSON Strategic...Geologic map of the Alstead area, Keene district , New Hampshire........................ 62. Map showing locations...and feldspar mines of the Grafton district, New Hampshire ....................................... 63o...of the Keene district, New Hampshire.. Figure 38. Index map of New Hampshire showing locations of the...402 TABLES Page Table 5. Power factors of New Hampshire muscovite....., 6. Size distribution and price |  | | Report (issue) | | Pegmatite Investigations 1942-45 New England By EUGENE N. CAMERON and OTHERS GEOLOGICAL SURVEY PROFESSIONAL..._______ _ Geology of the pegmatite districts of New Hampshire_ Rock units ________________________________...quality __ AnalyHis of the wartime mica industry of New England ________________________________________...Androscoggin County ______________________ _ Berry feldspar quarry __________________ _ Cumberland County ___...LaChance mines _______________________ _ Oxford County ____________________________ _ Barrett beryl prospect |  | | Field Trip Notes | | //' . GUIDEBOOK FOR FIELD IN ''fy,.'t:J TRIPS NEW ENGLAND NOVEMBER 10-12, 1952 Organized by the...Before visiting any of the sites described in the New England Intercollegiate Geological Conference guidebooks...Highlands of East-Central New York, Southern Vermont, and Southern New Hampshire Field Trip No. 2, Outstanding...Outstanding pegmatites of Maine and New Hampshire 73 Geology of the "Chelmsford Granite" 103 Field Trip...OF EAST-CENTRAL NEW YORK, SOUTHER Leaders: VERJ-IONT, AND SOUTHERN NEW HAMPSHIRE Marland P, Billings |  | | Book (volume) | | chalcedony, jasper and gem petrified wood. BUFFALO COUNTY KEARNEY, area gravel bars and pits along the Platte...petrified wood. CASS COUNTY WEEPING WATER, SE, on rd. to Nehawka, in the Snyderville Quarryļ¾ chalcedony, jasper...jasper, fossils. CHERRY COUNTY VALENTINE, in the Sandhills county along the Niobrara R. and Minnechaduza...gem qualityļ¾agatized and opalized wood. DAWES COUNTY CHADRON, in N part of Co. and as far W as Crawford...woods, etc. DAWSON COUNTY GOTHENBURG, in sand pitsļ¾petrified palm wood. DEUEL COUNTY CHAPPELL, all regional |  | | Report (volume) | | have also been correlated with the Blackstone (Nichols, 1956, Moore, 1959). The correlation of these rocks...exposed in Wakefield are like those mapped by Nichols (1956) along the strike 1.45 miles to the northeast...beneath cover, rather than discontinuous as shown by Nichols' map. The Blackstone cropping out along Allen Avenue...gneiss to schist (table 1, column 2). Garnet and sillimanite occur as conspicuous accessory minerals in some...medium-gray, medium-grained; east side of South County Trail, 600 feet north of Pawcatuck River. 5. Gneiss |  | | Journal (article/letter/editorial) | | either orthopyroxene+sillimanite or garnet+sillimanite. Quartz+biotiteĀ±sillimaniteĀ±garnet symplectites...spinel+quartzĀ±cordierite by orthopyroxene+sillimanite or garnet+sillimanite occurred around the [Sa] invariant...words: Barro Alto complex, Brazil; orthopyroxene+sillimanite; spinel+quartz; ultra-hightemperature metamorphism...spinel+quartz, sapphirine+quartz, orthopyroxene+sillimanite+quartz, or osumilitebearing assemblages (Harley...and higher pressure (Shulters & Bohlen, 1989; Nichols et al., 1992). Therefore, the presence of spinel+quartz |  | | Book | | localities. My fond hope is that someone of the new generation will take up the challenge of revising...tantalizing find, one of several mineral discoveries in New England since the 1970s, including gold in a state...104 ā¢ā¢ā¢ 11ne Gā¢ā¢ā¢ shou1d be ------------.1958. Cheshire 105 ā¢ā¢ā¢ 1ine 18 ā¢ā¢ā¢ p.382 should be p.385 114...11ne 2; ā¢ā¢ā¢ Amph1bo1ite--see Bolton, Worcester County M1nera1 Loca11t1es. page 85 ā¢ā¢ā¢ 11.8 3~ter cerium...ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢'.' ā¢.ā¢ā¢.ā¢ā¢ā¢ā¢ 2--6 Barn.table County ro ā¢ā¢ il Localiti ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravelsāÆagate, jasper, rare...āÆagate, jasper; d RR siding of ClayāÆagate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area depositsāÆSiderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional depositsāÆSiderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mineāÆpyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravelsāÆagate, jasper, rare...āÆagate, jasper; d RR siding of ClayāÆagate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area depositsāÆSiderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional depositsāÆSiderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mineāÆpyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | Heimann, A., Spry, P. G., Teale, G. S., Jacobson, C. E. (2006) CORONAS, SYMPLECTITIC TEXTURES, AND REACTIONS INVOLVING ALUMINOUS MINERALS IN GEDRITE - CORDIERITE - GARNET GNEISS FROM EVERGREEN, FRONT RANGE, COLORADO. The Canadian Mineralogist, 44 (5) 1025-1044 doi:10.2113/gscanmin.44.5.1025 | Journal (article/letter/editorial) | | near Evergreen, Colorado, are interlayered with sillimanite ā biotite ā garnet gneisses and contain spectacular...corundum (crn), cordierite (crd), and relict sillimanite (sil), associated with ilmenite (ilm) and later-formed...cordierite pseudomorphs mimic the shape of prismatic sillimanite crystals. Textural studies and phase relationships...following reactions, derived from gedrite + sillimanite: ged + sil = crd + grt; ged + sil + sphalerite...Colorado, sont interlitĆ©s avec des gneiss Ć sillimanite ā biotite ā grenat et contiennent des textures |  | | Journal (article/letter/editorial) | | is suggested by the widespread occurrence of sillimanite pseudomorphs after andalusite as well as abundant...studies of the quartz plagioclaseĀ±K-feldsparĀ±sillimaniteĀ±biotite Ā garnet cordierite assemblages in...produced intergrowths of pale green biotite Ā sillimanite + quartz on cordierite and/or garnet grain boundaries...Eastern Washington University, Cheney, WA 99004, USA E-mail: jennifer.thomson@mailserver.ewu.edu Tel.:...1989). Garnet leucosomes may also contain coarse sillimanite pseudomorphs after andalusite, suggesting that |  | | Report (issue) | | and use. The amount of new literature on California minerals, and the number of new-found occurrences, since...read Vonsen. p. 46. T'nder anatase, San Benito County, add, at end of sentence, 136. They do Louderhack...30 E... M.n., read p. 89." Under cerussite. Inyo County (1) for sec. U,. T. sec. IJ,, T. 6 S., R. 30 E...ussocidted p. 140. rn(b'r erytlirite. add Tuolumne County: erijthrite 189. arscnopyrite in the Josephine...Lake County, Bradford oecurence sliould bo li.sted as 2. p. 210. !^^onazite, Itiverside County, reference |  | | Journal (volume) | | educator I found this to be very satisfying. In this new millennium, I trust that we all will find the time...enthusiasm to future generations. Welcome to the new millennium. I hope that this newsletter finds you...Lyndonville and Castleton, the State University of New York at Plattsburg, the Vermont Geological Society...the Paleontological Society (NEPS), the Eastern New England Sections of the National Association of Geology...Honor of Rolfe Stanley. 3. Glacial Processes in New England: A Symposium in Honor of Fred Larsen. 4. |  | Kobayashi, Tomoyuki, Hirajima, Takao, Kawakami, Tetsuo, Svojtka, Martin (2011) Metamorphic history of garnet-rich gneiss at KtiÅ” in the Lhenice shear zone, Moldanubian Zone of the southern Bohemian Massif, inferred from inclusions and compositional zoning of garnet. Lithos, 124 (1) 46-65 doi:10.1016/j.lithos.2010.11.003 | Journal (article/letter/editorial) | | the rock mainly comprises cordierite (Crd), sillimanite (Sil), biotite (Bt), garnet (Grt), quartz (Qtz)...peraluminous garnet-rich gneiss at KtiÅ” and propose a new idea on the identiļ¬cation of the Lhenice shear zone...garnet-rich gneisses collected from the abandoned quarry in locality KtiÅ”, located SW of ÄeskĆ© BudÄjovice...BudÄjovice (Fig. 1). Garnet-rich gneisses, along with sillimaniteābiotiteāgarnet and also cordierite-bearing kinzigites...Petrography Garnet-rich gneiss crops out in an abandoned quarry at KtiÅ” (48Ā° 55ā² 40N, 14Ā° 08ā² 37E) in the Lhenice |  | | Journal (article/letter/editorial) | | staurolite+kyanite+plagioclase+biotite+muscoviteĀ±sillimanite and garnet+amphibole+plagioclase, in the south;...are characterized by the assemblages garnet+sillimanite+Kfeldspar+plagioclase or antiperthite+biotit...part)+kyanite+ternary feldspar+quartz+rutile. Sillimanite+garnet (rim part)+K-feldspar+ oligoclase+ilmenite+biotite...spinel+cordieriteĀ±orthopyroxene, which are coronas around sillimanite and garnet, are retrograde products of this peak...(Swapp & Hollister, 1991; Macfarlane, 1995 ). Our new data are consistent with this conclusion. This is |  | | Journal (article/letter/editorial) | | Sciences, Mail Code 170-25, Pasadena, CA 91 725, USA ABSTRACT Three generations of mylonites discovered...lithospheric-thinning. INTRODUCTION This paper presents new evidence for the distribution and magnitudes of ...The terrane is a gently tilted crustal section (Nichols, 1993) and shares similarities with other Gondwana...that may have extended 900 km, 223 224 C . T. NICHOLS - northern Prince Charles Mountains & eLGR 8p\...fold-forming deformations (McKelvey & Stephenson, 1990; Nichols & Berry, 1991; Fitzsimons & Thost, 1992). These |  | Dasgupta, , Sengupta, , Sengupta, PR., Ehl, , Raith, (1999) Petrology of gedrite-bearing rocks in mid-crustal ductile shear zones from the Eastern Ghats Belt, India. Journal of Metamorphic Geology, 17 (6) 765-778 doi:10.1046/j.1525-1314.1999.00226.x | Journal (article/letter/editorial) | | K-feldspar, biotite, quartz, cordierite and sillimanite (Grant, 1981; Robinson et al., 1982; Lal et al...porphyroblastic while sillimanite is prismatic and shows strong preferred alignment. Sillimanite is additionally...co-exists with garnet and cordierite but not with sillimanite and quartz. In metapelite affected by DSZ , albite...along DSZ , an P (2) intergrowth of biotiteāsillimaniteāquartz forms foliae that replace and deviate...biotiteāsillimaniteāquartz symplectite around garnet and cordier- 769 Fig. 4. Sillimaniteābiotiteāquartz |  | | Journal (article/letter/editorial) | | crystallized to an assemblage of corundum+mullite+sillimanite+ plagioclase+spinel+rutileĀ±tridymiteĀ±cordierite...cordierite-spinel thermometry as developed by Nichols et al. (1992). For the interpretation of mullite-involving...groundmass of plagioclase with minor mullite and sillimanite. In the upper part, large colourless crystals...(Fig. 3C) and abundant crystals of mullite and sillimanite (Figs. 4h and 5c). The latter two minerals occur...Mullite appears to be much more common, but sillimanite was detected in all samples. In the following |  | | Journal (article/letter/editorial) | | assemblages of garnetācordieriteāspinelāilmeniteāsillimanite. Qualitative modelling in the system K OāFeOāMgOāAl...Bluffs, involving the destabilization of biotite+sillimanite to produce garnet +K-feldspar+meltĀ±cordierite...several solid-state reactions involving garnet+sillimanite assemblages reacting to plagioclase, spinel+cordierite... composed of aggregates of elongate garnet, sillimanite and ilmeniteāspinel intergrowths also define...Although the semipelite unit is dominated by garnetāsillimaniteāspinel felsic gneiss, it is locally divisible |  | | Journal (article/letter/editorial) | | late stages of the Panafrican event. We present new petrological data derived from metapelitic rocks...in an area about 80 000 km2 large (Fig. 1). These new samples, investigated with identical methods to enable...enable a detailed comparison among them, place new constraints on the Panafrican effects in this area...structure. In these belts, paragneisses with sillimanite and cordierite, graphite schists, marbles, calcsilicates...finally, was found at a quarry about 10 km W of Ihosy and 5 km W of Ankily. The quarry is situated close to |  | | Journal (article/letter/editorial) | | 1988; Hoisch, 1990, 1991; Koziol and Bohlen, 1992; Nichols et al., 1992; Holdaway, 2001; Wu et al., 2004a...andalusite and sillimanite, 95 samples contain sillimanite, 18 samples contain sillimanite and kyanite,...over-determined equations for the andalusite-, sillimanite- and kyanite-bearing assemblages, respectively...(Table S2; Fig. 1a). Except for four andalusite-sillimanite-bearing samples, the other samples have been...sector of the Etive thermal aureole, adjacent to the Quarry Diorite ring intrusion. Six metamorphic zones (I |  | | Journal (article/letter/editorial) | | but are rare in migmatites (Fig. 2B). However, sillimanite needles mimicking a crenulated fabric have been...almost completely consumed Bt+ Sil + Qtz (crossed-nichols view); (E) Corroded Grt +Pl+ Bt reacting to form...(Turku, SW Finland); (E) Bt + Qtz in Kfs (crossed-nichols view); (F) Spl + melt reacting to Grt + Sil Ā± Bt...after Crd (Northampton, W Australia) (crossed-nichols view); (K) Crd partly broken down to low-Ti Bt...intergrowths in migmatites are often associated with sillimanite, very locally with andalusite (SW Finland migmatites) |  | | Journal (article/letter/editorial) | | migmatites from the Chafalote Metamorphic Suite: New insights into the Neoproterozoic PāT evolution of...belt, formed in a magmatic-arc tectonic setting. New data, acquired using mineral assemblages, microstructures...with mineral lineations marked by prismatic sillimanite in the metasedimentary rocks (cf. stereonet in...which occur interlayered with Grt + Bt- and sillimanite-rich pelitic migmatites in the central area (Fig...The M1 prograde assemblage is represented by sillimanite, quartz and biotite inclusions within garnet |  | | Report (volume) | | Richmond and Alien, 1951. Moore, 1958. Moore, 1964. Nichols, 1956. G. E. Moore, Jr., unpub. data. Quinn, 1951...MOUNTAIN SYSTEM Rhode Island and most of the rest of New England are commonly considered to be within the...but they are not known elsewhere in New England. Other parts of New England may have been affected by this...many of the rocks of Rhode Island, and of much of New England, are very uncertain because fossils are generally...active quarry near Lime Rock (the old Harris quarry), and the other is at the abandoned quarry about a |
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