 | | Book |
| essentials of crystallography, chemistry, and crystal structure. These provide a firm basis for discussion...crystallography at the beginning of the text, crystal systems and associated conventions and terminology...minerals in order to avoid those lamentable errors in crystal forms and colors which are instantly apparent to...slightly reduced, and a few enlarged, as the diamond crystal of Plate 1, depicted in both natural and greatly...this is not simple and straightforward. 'Mineral', 'rock', and 'stone' are used indiscriminately as e9ujvalents |
 | | Book |
| utilization of known materials (e.g., chemically pure graphite applied as a moderator of fast neutrons in atomic...partial ablation of the surface causes cooling of the lower layers, which thus acquire a more resistant structure...(diorites to quartz diorites) which predominate in the lower layer of the continental crust, produces melts that...industrial minerals of magmatic origin (diamond, graphite, corundum, forsterite, apatite, eruptive rocks)...consolidation. The early magmatic deposits of diamonds and graphite have a common origin from carbon or carbonaceous |
 | | Journal (article/letter/editorial) |
| small furnace in Gadsden. The mineral occurs in Lower Cambrian limestone, referred to as the Conasauga...Angeles 37, Calif., sent R & M a loose one inch rock crystal containing tiny scheelite crystals. The specimen...Cochise Co., Ariz. These scheelite inclusions in rock crystals are rare and make valuable specimens for...under the Mineralight; in addition the quartz crystal has a colorless phantom in it. Arkansas—The most...Michigan, Ann Arbor, Mich.) The Micanite pegmatite district lies across the Park-Fremont County line in south-central |
 | | |
| What is the difference between a mineral and a rock? Where do they come from? How do Istart collecting...rocks, and how to test them. : Each mineral and rock is accompanied with concise descriptions and precise...photographs; Bob Gault took a number of the mineral and rock photographs; Donna Naughton took a number of field...mineral and rock descriptions. introduction Mineral and Rock Collecting Mineral or Rock? Origins of...Non-metallic Mineral Identification Key How to Identify a Rock Geological Regions of Canada ©) en, Sey SP It lex) |
 | | Catalog/List |
| Loose Crystals. Crystals. Pseudomorph Crystals. Crystal Models. Box Mounts. Small Pyrite Crystals. ... soft a In planes. diameter occurred, “In rock mineral, "At were of large, prisms, of this...coated overcaps and crystals fine and gangue rock very now occaoccurs Minerals of a vugh two...occurring country the was few a bunches country rock, detached. but this and PbCrO4 bright, shining... twin, perfectly apparent, and rare QUARTZ CRYSTAL. twinning. is not at all uncommon, but quartz |
 | | Catalog/List |
| t::_: •.·'':{}j;,·}~t' MM - T 'N Fl. P. R. - crystal crystalled crystalline crystallized micromount...opalescence ................... PERICLINE Italy, Austria 1 SWitzerland Aleine areas Fine large white twin...Mountains, Marysvale ----i'>ink crystalline mass, some crystal vugs ALTAITE Lead telluride Colorado Saguache County... Norway Kragerp Pure dark green cleavages and crystal sections .. Norway Kragerp ~JJ laq? lustrous dark...Island of Linosa --Lustrous black rectangular crystal sections : 'I to ~II $, 25, 5/ $1. 00, • • • • |
 | | Book |
| This book provides a basic introduction to the crystal structure of minerals, as well as illustrations...pressures and temperatures. Immense quantities of rock and their constituent minerals are altered and destroyed...crystals are considered to be a mineral called crystal structures. Natural crystals formed by geological...laboratory-grown (synthetic) because they grow in rock. crystals, although identical to their natural...are not considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: |
 | | Catalog/List |
| invited. ABBREVIATIONS used in this catalog xl -crystal xlled -crystalled xlline - crystalline xllized...············································ 28 ROCK AND MINERAL COLLECTIONS······················-·...Black glassy crystals imbedded in camptonite dike rock .................. . TREMOLITE Calcium magnesium...Mountains, Marysvale ~ink crystalline mass, same crystal vugs .... AMBL YGONITE Sodium lithium aluminum... Arassuahy Transparent brown-green pleochroic crystal prisms ¼"to ½" $. 25 each 5/$1. 00 ....... Czechoslovakia |
 | | Book |
| photographs; Bob Gault took a 11un1ber of the mineral and rock photographs; Donna Naughton took a nun1ber of field...mineral and rock descriptions. . .. Introduction Mineral and Rock Collecting Mineral or Rock? Origins...Non-metallic Mineral Identification Key How to Tdentify a Rock Geological Regions of Canada 6 6 6 7 7 8 10 11...Minerals and Rocks IX Introduction Mineral and Rock Collecting or most of us collecting is a natt:u-al...a healthy, active, outdoor life. F Mineral or Rock? Mineralogists would define a rnineral as one or |
 | | Journal (issue) |
| Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher photo. Fluorapatite, 3.3-cm crystal, from...from the Pulsifer quarry, Maine. Collected by Terry Szenics; Jeff Scovil photo. Vanadinite, 2.4 cm, from...own favorite experiences is gazing raptly into a crystal pocket just after it has been opened, and all the...rosette, with prehnite, 14 cm, from the Centreville quarry, Fairfax, Virginia. Smithsonian Institution collection...C6649; Lee Boltin photo. Fairfax Quarry, Virginia, 1967 The Fairfax quarry in Virginia is a classic locality |
 | | Journal (article/letter/editorial) |
| biotite schist and coming from the Worth feldspar quarry on Bog Hill, East Hampton, Middlesex Co., Conn...has been mined with lead ore in the Wood River district, Blaine Co., Idaho. ILLINOIS—The following note...digging. They are quite famous." KANSAS—Halite (rock salt) has been mined for many years at Ellsworth...published in 1836. However none of my narrow circle of rock hunting friends had ever seen any from this state...intrusion into the schist which makes up the country rock of the area. Under ultra-violet light some scheelite |
 | | Book |
| purchased or traded. After introducing the main rock types this guide concentrates upon the places which...Proustite (East Germany) 7 Rocks We can define a rock as a large mineral body which may contain only one... Petrologists, who study rocks, recognize three rock classes and within each class a large number of...Basalt arises from a lava solidified into a black rock, containing no quartz but rich in the feldspar minerals...rocks as seams (known as dikes). When the intrusive rock forms masses parallel to the structure of the rocks |
 | | Book |
| Elementary mineralogical terms 8 What does the crystal shape reveal? 9 Mineral interiors 14 Mineral properties...are described and illustrated), to elucidate the rock-building processes, and to describe the best way...mineral — the internal symmetry and structure of crystal lattices. Crystallochemistry is concerned with...or rock found in a natural locality is called a specimen. A pattern is a piece of mineral or rock collected...collected for analysis. WHAT DOES THE CRYSTAL SHAPE REVEAL? Crystals are bodies bounded by usually flat |
 | | Book |
| wonder of nature. Often emanating from the parent rock in brilliant colours and weird and wonderful textures...minerals are a visual treat, and check-boxes on crystal habit, colour, lustre and specific gravity will...processes such as tectonic movements, volcanoes, rock and ore formation, and looks at the physical and...Ant hony Duke. Anthony Duke also supplied the crystal structure diagrams appearing throughout the Directory...to take when handling, identifying or collecting rock and mineral specimens; however, we cannot accept |
 | | Book |
| Elementary mineralogical terms 8 What does the crystal shape reveal? 9 Mineral interiors 14 Mineral properties...are described and illustrated), to elucidate the rock-building processes, and to describe the best way...mineral - the internal symmetry and structure of crystal lattices. Crystallochemistry is concerned with...or rock found in a natural locality is called a specimen. A pattern is a piece of mineral or rock collected...collected for analysis. WHAT DOES THE CRYSTAL SHAPE REVEAL? Crystals are bodies bounded by usually flat |
| | Book |
| Elementary mineralogical terms 8 What does the crystal shape reveal? 9 Mineral interiors 14 Mineral properties...are described and illustrated), to elucidate the rock-building processes, and to describe the best way...mineral - the internal symmetry and structure of crystal lattices. Crystallochemistry is concerned with...or rock found in a natural locality is called a specimen. A pattern is a piece of mineral or rock collected...collected for analysis. WHAT DOES THE CRYSTAL SHAPE REVEAL? Crystals are bodies bounded by usually flat |
 | | Book |
| which is not often in a visually appealing habit. CRYSTAL SYSTEM Crystals are made up of atoms or molecules...referred to as the crystal system adopted by that particular mineral. Each crystal system constrains the...crystals can adopt. Some crystal shapes can be characteristic of a crystal system such as the cube and...measurement to be diagnostic. Crystal systems are summarised below. Crystal System Unit cell shape Cubic...dodecahedral crysta ls; wiry, arborescent, massive Crystal system: cubic 14 NATIVE ELEMENTS Silver S |
 | | Book |
| minerals, will find the book invalu¬ able. Each rock or mineral is dealt with systematically and defined...tion appearing opposite a colour photograph of the rock in question. For the layman, there are clear defi¬...a guide only since the International Society of Rock Mechanics is currently drafting tables for general...these properties may vary so greatly within one rock type that such figures should only be considered...possible quick reference and identification of the rock or mineral concerned. The objects photographed were |
 | | Catalog/List |
| FLUORITE,Rosilare Level.Minerva Mine No 1 ,Cave-in-Rock District.Southem Illonois.Xtl group of interlocking...Ml.Ex Col. Williams colln.£10 6. QUARTZ,var ROCK CRYSTAL,Minas Gerais.Brazil Pure snowy white druse of...D TN.£8 14. QUARTZ,var Rock Crystal,Hardanger.Norway.Clean xtl group of rock xtl prisms to 65mm free...QUARTZ,var. Rock Crystal,Hots Springs.Arkansas,USA.Very pretty xtl group of tapering rock xtl prisms to...little massive galena.Good RF Ml £5 35 QUARTZ.var Rock Crystal.Hots Springs,Arkansas.USA 3 intergrown water |
 | | Book |
| precious stones) and, finally, the most important rock-forming minerals. Illustrations in colour show mineral...minerals. Under magnification the rough surface of the rock reveals grains of differing colours, shapes and...of these factors, as well as the description of crystal forms of different substances, are the subject...not just the external covering of the latter by crystal faces. In rocks crystalline mineral grains are...parallel rows intersecting in a regular pattern. The crystal form is the outward expression of the internal |
| | |
| precious stones) and, finally, the most important rock-forming minerals. Illustrations in colour show mineral... Under magnification the rough surface of the rock reveals grains of differing colours, shapes and...of these factors, as well as the description of crystal forms of different substances, are the subject...not just the external covering of the latter by crystal faces. In rocks crystalline mineral grains are...parallel rows intersecting in a regular pattern. The crystal form is the outward expression of the internal |
| | Book |
| precious stones) and, finally, the most important rock-forming minerals. Illustrations in colour show mineral...minerals. Under magnification the rough surface of the rock reveals grains of differing colours, shapes and...of these factors, as well as the description of crystal forms of different substances, are the subject...not just the external covering of the latter by crystal faces. In rocks crystalline mineral grains are...parallel rows intersecting in a regular pattern. The crystal form is the outward expression of the internal |
| | Book |
| which is not often in a visually appealing habit. CRYSTAL SYSTEM Crystals are made up of atoms or molecules...referred to as the crystal system adopted by that particular mineral. Each crystal system constrains the...crystals can adopt. Some crystal shapes can be characteristic of a crystal system such as the cube and...measurement to be diagnostic. Crystal systems are summarised below. Crystal System Unit cell shape Cubic...dodecahedral crysta ls; wiry, arborescent, massive Crystal system: cubic 14 NATIVE ELEMENTS Silver S |
 | | Book |
| to take when handling, identifying or collecting rock and mineral specimens; however, we cannot accept...geological site before entering the site or removing rock and mineral specimens, and note that these may vary...by Anthony Duke. Anthony Duke also supplied the crystal structure diagrams appearing throughout the Directory...photographs were provided by the following: 2 (Granite rock exposed at Tarn (Midi-Pyrenees), France), Nature...Faults 18 Volcanoes 20 Igneous Features 22 The Rock Cycle 24 Flow Igneous Rocks Form 26 Flow Sedimentary |
 | | Journal (issue) |
| loosely aggregated, and passing into a compact salite rock. There are other specimens in which the same white...several specimens of what we then called mortised rock, and I be lieve your specimen from Pittsfield is...manganese, 2 lead, 1 arsenical (pyrrhotite) ores; 3 of graphite; 2 of asbestos; 5 of chrysotile; 4 0f barite-...important iron mine, clay, sand, or marl bed, stone quarry, or fossil bearing for mation is represented; and...cretionary structure, joint and columnar structure, rock cleavage, cave formations—stalactites, helicites |
Graphite quarry, Amstall, Mühldorf, Krems-Land District, Lower Austria, Austria