 | | Book | | vugs of crystalline talc. Easily the best extant crystal, a doubly terminated floater found in a talc vug...known in 1887 as the Yale Farm, about two miles northeast of the town of Litchfield, where a mass of white...a few such specimens have been found after 1960 (see the Amity-Edenville entry for Edenite and Spine!)...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...to 2 cm which are pseudomorphs after bastnasite--see photo in Guastoni, Pezzotta and Zorzi (2008). ILMENITE |  | | Journal (issue) | | North-West Branch: 1. Knight, F.G.A. South Yorkshire & District Branch: J. I. Platts, F.G.A. Examiners: B. W....(Na3AlF6). Cryolite occurs in nature as a monoclinic crystal (high-temperature-polymorph > 570 °C—cubic) as...1983, XVIII, 6 Knischka are not only very easy to see but are also a highly characteristic internal hall-mark...6 FIG. 26. Tiny flux inclusions looking like crystal shapes accompanied by a double row of minute flux...appears to mark the hexagonal outline of a seed crystal in a synthetic ruby by Chatham. 13 x FIG. 39. |  | | Journal (volume) | | Geologist C. A. Logan, District Mining Engineer C. McK. Laizure, District W. Burling Tucker, Reid...J. C. District Mining Engineer District Mining Engineer Mining Engineer O'Brien, District Mining...Mining Engineer George John District Sampson, Assistant Chas. V. Averill, Mining Engineer L. Gary,...Mines, by Walter W. Bradley SAN FRANCISCO FIELD DISTRICT Mines and mineral resources of 7 11 Santa...San Francisco Field District, by C. McK. Laizure 53 LOS ANGELES FIELD DISTRICT 58 Current notes on |  | | Book | | detailed review of the .Minerals of California series, see I. Campbell, 1966, pp. 13-19.) For over 100 years...project, and who also prepared the majority of the crystal drawings for publication. H. Earl Pemberton Lake...character of the state's eleven geomorphic provinces (See Map 1-1). From the lake-bed deposits of the Basin...mol Molecular. norite A coarse-grained plutonic rock containing labradorite as a chief component and...phenocrysts Relativlely large , conspicuous crystals in rock with a finer groundmass. pillow basalt Pillow-shaped |  | | Book (edition) | | editions, and Hey's "Chemical Index of Minerals" (see below for more complete references to these works)...work now being published in phase equilibria and crystal-structure analyses, the work on syste1natic optical...of the properties. Chemical Formula: Until the crystal structure is known or at least until an accurate...with simple Miller indices) that are potential crystal faces or, when the bonds across the plane are few...representing crystal planes: ( ) Miller indices included in parentheses denote a single crystal plane. { |  | | Book (volume) | | commerce. Coarser gemstones, or those which are rock-like in character or abundance, are treated in still...Gemstones, Crystals, The Geometry of Crystals, Crystal Growth, Cleavage, Specific Gravity, Light upon...645 668 List of Illustrations . Six crystal systems . A crystal lattice . Refraction and reflection of...tourmaline . Dispersion . Three diamond crystals CON BPW AM N . Diamond crystals from Arkansas . Map of diamond...Murfreesboro diamond mine . A California diamond crystal . Seven corundum crystals . Map of Corundum Hill—Ellijay | | | Book | | detailed review of th e Minerals of California series, see I. Campbell, 1966, pp. 13-19.) For over 100 years...support for also prepared the majority of the crystal drawings for publication. H. Earl Pemberton ...of the diverse character of the state’s eleven (See Map 1-1). mineral species, plus 5 species found... Molecular. A norite coarse-grained plutonic rock containing labradorite as a chief component and... is Relativlely large, conspicuous crystals in rock with a finer ground- phenocrysts mass. Pillow-shaped |  | | Report (issue) | | description includes the chemical composition, crystal form and habit if distinctive, cleavage, hardness...magma, or molten rock material. Usually this results in the crystallization of the rock-forming minerals...precipitation of dissolved material, as in the case of rock salt or gypsum. More commonly they are made by the...the accumulation of actual particles of rock material washed down from the land surface and spread out...the action of powerful earth any earlier-formed rock mass, so that notable changes in forces on character |  | | Report (volume) | | elsewhere, are shown on other maps of the State (see especially Fischer and others, 1946). MINERALS...lead to the discovery of a new mineral or a new crystal form. He can surely use the description for planning...from 1ninerals. F·xcept for native gold and the rock-forming minerals that comprise construction materials...galena that had been recently found in the Tenmile district, Summit County. In his booklet, which today would...increase in numbers of amateur mineral collectors, or "rock hounds" during the past decade or two. Concurrently |  | | Report (issue) | | from references to the geographic term ''Mining District," especially in the pre-1920 literature. Widespread...new silicate minerals ( Agrell, Brown, and McKie Am. Mineral. 50, : p. 278). Hand in hand with the...imagine what Professor Blake might think if he could see the trends in commercial minerals that have developed...such-and-such a formation, or in this-or-that kind of rock, or adjoining a certain kind of contact, is a favorable...are making California 's mineral empire " as we see it in this current volume and as it was portrayed |  | | Book (edition) | | Kunzeman, Tom Kurupas, M. G. Laberge, Dr.J. H. Langenh~im, Haydon E. Lanois, William F. Larson, Stan Leaming...Woodward, Jr., Herman Yaras, and Jack R. Young. i am glad to acknowledge a special debt to Jeffrey Kurtzeinan...Star of Arkansas crystal 3. Star of Arkansas marquise cut gem 4. Mounce diamond crystal 5. Gibson's Ruby...Drawing of beryl crystal forms 14. San Pedro mine, Pala, California 15. Morganite crystal from Pala, California...pegmatite, Baja California 22. Drawing of topaz crystal forms 23. Views of opal mines, Spencer, Idaho 24 |  | | Report (issue) | | Colorado Beryl Collecting Mark I. Jacobson Page 14 Crystal Structure of Beryl and Pezzottaite William "Skip"...August Breithaupt had his seal carved into a beryl crystal. Breithaupt began his studies in 1811, during A...refer, rather than to a given species, to the crystal properties of clarity and luster. The French term...which have varietal names that are widely used (see page 22). These include aquamarine, red beryl, morganite...crystals from various alluvial deposits; the largest crystal is about 4 cm wide Collection Eckehard Petsch |  | | Journal (volume) | | Geologist C. A. Logan, District Mining Engineer O. McK. Laizure, District W. Burling Tucker, Reid...Engineer District Sampson, Assistant Mining Engineer Los Angeles Los Angeles District Engineer ... Chas. V. Averell, District Mining Engineer Frank Sanborn, Mineral John F. Bongard, Ore-Buyers' Inspector...Reports of District Mining Engineers 7 Redding Field District 7 Sacramento Field District 7 San Francisco...Francisco Field District 7 Los Angeles Field District 7 Geologic Branch 8 Current Notes 8 Source |  | | Book (edition) | | City) to use crystal di8grams f'rom "te.na' s System of Ml.neralogy" (7th.ad., 1944 & 1951) am "Dene.' a...Beryl crystals weighing over a ton are known - one crystal from Albany, Mline was 18 feet long, 4 feet in...crystals measur..e 10 feet across, and a spoo.umene crystal from the Black Hills bad a length of 47 feet. In...feldspar were reportedl:, obtained from a sinsJ.e crystal. Characteristics The characteristic pegmatite texture...{stoping) , and assimilation of surrounding wall rock, Streaming of gases present, possibly forming some |  | | Book | | Crystal Mountains MINERALS OF THE CAIRNGORMS The Cairngorms are the most extensive area of high mountain...specimens have come to light in recent years. Crystal Mountains MINERALS OF THE CAIRNGORMS by Roy E...dress, and is recognised throughout the World. Crystal Mountains - Minerals of the Cairngorms unravels...provides an unexpected twist at the end of the book. Crystal Mountains is a meticulously researched and authoritative...Minerals NATIONAL MUSEUMS SCOTIAND, EDINBURGH CRYSTAL MOUNTAINS PREFACE The Cairngorms is an area of |  | | Report (Issue volume) | | Care of specimens Collecting in Canada Mineral and rock sets Abbreviations used in references YUKON NORTHWEST...and Quebec, an d Mr. D. J. \Vells of the Lapidary, Rock and Mineral Society of British Columbia for supplying...of commercial outlets for the sale of mineral and rock specimens, hand-crafted jewelry and ob jets d'art...search for minerals, also road and rnilway cuts; rock exposures along cliffs and along the shores of sea...those worn by skiers, should be worn when chipping rock or trimming specimens. Insect repellent is essential |  | | Book (edition) | | The study of New Mexico specimens revealed new crystal forms for some minerals and much valuable information...mineral are 2;iven: 1) the accepted largest crystal of calcite in the of- information name is ...editions of Dana's System Dana Textbook of mineralogy. See: E. S. Dana (1892) The System of of mineralogy... Grim (1953) Clay mineralogy. Iddings (1911) Rock minerals; Their chemical and physical characters...reference. 2. Description 4th ed. John Wiley & Sons. See Bibliography for complete A PREFACE xi Other |  | | Journal (volume) | | Geologist C A. Logan, District Mining Engineer C. McK. Laizure, District W. Burling Tucker, Reid...Reid J. Frank Sanborn, District Mining Engineer District Engineer Mining Engineer Mineral Technologist...Ore-Buyers' Inspector Henry H. Symons, J. C. District Sampson, Assistant Ohas. V. Averill, John ...Reports of District Milling' Engineers Redding Field District Sacramento Field District San Francisco...Francisco Field District Los Angeles Field District Mineral Development and Mining Activity in Southern « California |  | | Report (volume) | | Examples are: Dinosauria. See Reptilla. Footprints. See Tracks and trails. Miocene. See Tertiary. Some of the...similar or related nature. Examples are: Mollusca. See also Cephalopoda, Gastropoda, Invertebrata, Pelecypoda...Pelecypoda, Scapho- poda. Mineral resources. See also the subheading Economic geology under the various...Photogeology _______________ Popular and elementary _______ Rock descriptions____________ Study and teaching______...geology. Articles written for the layman. Listed by rock names and areas. Articles dealing with the educational |  | | Book (edition) | | OF ARIZONA Wulfenite. Red Cloud mine, Silver district, Trigo Mountains, La Paz County, Arizona. Smithsonian...Corporation. (ngs * Prien’ jee. eae, "Pa hin Sage See Wena we & = ce *= a. ~ Ve Shiki a Per, pine...Hydrothermal Deposits The Bisbee District, Cochise County 64 70 The Tombstone District, Cochise County The Mammoth-St...62 Primary minerals at Bisbee, Cochise County 65 Rock-forming, gangue, and alteration minerals at Bisbee...augmented; a discussion of the classical Tombstone district has been inserted between those of Bisbee and | | | Book (edition) | | ARIZONA • Wu!fenite. Red Cloud mine, Si/district, Trigo Mountains, La Paz County, Arizona. Smithsonian...Hydrothermal Deposits 63 The Bisbee District, Cochise County 64 The Tombstone District, Cochise County 70 The Mammoth-St...62 Primary minerals at Bisbee, Cochise County 65 Rock-forming, gangue, and alteration minerals at Bisbee...augmented; a discussion of the classical Tombstone district has been inserted between those of Bisbee and...Mineral Museum, Tucson; x = micromount collection AM ASDM ASU H MM NHM s UA new mineral makes its description |  | | Book | | WHAT IS PROBABLY THE WORLD'S FINEST APOPHYLLITE CRYSTAL, CENTREVILLE, VA. SPECIMEN C O L L E C T E D B...year give collectors a chance to buy new finds, see f i n e workmanship, a n d s h o w t h e i r h o...state increase in direct proportion to the amount of rock hobby interest. There is little reason for any area...is another progressive city which caters to the rock hunter. Besides sponsoring one of the most successful...known mines have been exceedingly cooperative with rock clubs, often allowing large groups to have field |  | | Journal (volume) | | A. Logan, District Mining Engineer C. Jenkins, Chief Geologist McK. Laizure, District W. Burling...Engineer District Sampson, Assistant Mining Engineer District Engineer Chas. V. Averill, District Mining...OF CONTENTS Page DISTRICT REPORTS OF MINING ENGINEERS—— 7 Redding Field District 7 Sacramento Field...Field District 7 San Francisco Field District 7 Los Angeles Field District i) Current Mining Activity...MINERALOGIST- S H ^ A S T A i @(.o.» •«-£] — M EH am «— ""j *-**", V I CALIFORNIA LASSEN. J _ |  | | Report (issue) | | silver, and lead. Tombstone district, with lead-silver ores. Pearce district, with silver ores. Dragoon...Dragoon Mountains, Manzoro district. Dos Cabezas Mountains, Dos Cabezas and Teviston districts. Huachuca Mountains...County-Globe-Miami district, with ores of copper and silver. Dripping Spring Mountains, Barnes district, with ores...and silver. Payson district. Graham County-Galiuro Mountains, Rattlesnake district. Pifialeno Mountains...County-Clifton-Morenci district, with ores of copper and silver. Maricopa County-Vulture district, with lead and |  | | Journal (volume) | | Geologist C. A. Logan, District Mining Engineer O. McK. Laizure, District W. Burling Tucker, Reid...Engineer District Sampson, Assistant Mining Engineer District Engineer Ohas. V. Averill, District Mining...REPORTS OF DISTRICT MINING ENGINEERS- 7 ( Redding Field District Sacramento Field District San Francisco...Francisco Field District Los Angeles Field District 8 Miner al Resources of San Diego County 56 GEOLOGIC...possibilities and developments). REPORTS OF DISTRICT MINING ENGINEERS In 1919-1920 the Mining Bureau |
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