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| collection. Some collectors seek out only rough-and-cut gem minerals, or they may specialize in just one...crystals of aragonite to 4 mm encrusting a galena crystal is in the Smithsonian collection. Massive banded...and Wheal Cock, St. Just district, as well as Wheal Edward, Callington district. The aragonite from these...all in Guadalajara (Jiménez 2010). Azure-colored crystal groups to 15 cm across have come from Eugui, Navarra...Natur in Salzburg, Austria. This example, from Erzberg, near Eisenerz, Styria, Austria, measures 49 × 39 |
 | | Journal (article/letter/editorial) |
| 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...village of Micanite. The pegmatite of the Micanite district contains unusually large 378 ROCKS AND MINERALS |
 | | Book (edition) |
| formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest X-ray powder...and opaque minerals. More attention is paid to crystal habit or aggregate development and their sizes...species must contain chemical formula, structure (crystal system, space group, and unit cell dimensions)...units (A), expressed differently according to the crystal system: only a for the cubic system, a,c for the...specifying the orientation of the crystal faces in relation to the crystal axes, a set of three or four numbers |
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| three types, 4" -6" -8" diameters for high speed cut-off saws, 10" -12" for medium duty general work,..."Streamliners" need absolutely no breaking in. They cut immediately. They wi II not wear one side from the.................................... EMERALDS IN AUSTRIA ··············································...··········· .A METHOD FOR THE CONSTRUCTION OF CRYSTAL MODELS. By Horace R. Blank ............................................. AN INT ERESTING DIABASE CuT IN NEW JERSEY. By Petet' Zodac ................. |
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| . PLEASE SEND THEM I N . Abbreviations: x l - crystal fl—fluoresces xled—crystallized ph—phosphoresces...xline—crystalline ARKANSAS — "Would you please identify the rock samples enclosed herein ? All of the samples are...sample is from a well which I just drilled and the rock deposit was 21 ft. thick."—requests Edward Lepel...N / W Arkansas. COLORADO — "Recently we took a rock trip to North Table Mountain at Golden, Colo., the...best garnet crystal I have ever seen from this location. It is a single dodecahedral crystal in the matrix |
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| Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher photo. Fluorapatite, 3.3-cm crystal, from...own favorite experiences is gazing raptly into a crystal pocket just after it has been opened, and all the...classic locality for spectacularly large apophyllite crystal clusters, which still rank as some of the largest...cleaned off the thaumasite to expose the entire crystal. It is free of damage thanks to the protective... Eureka Supplement 5 THE THRILL Wulfenite crystal cluster, 30 cm across, collected in the Glove mine |
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| information b Book review c Crystal morphology information d Crystal drawing ff Continues on following...the Alpine ar,d Subalpine region [Switzerland,Austria and Iti:Jy](by C. M. Gramaccioli) 8:287-293 Minerals...Alps of Austria (by K. Kotal) 13:171-173 ALSTONITE An occurrence of alstonite at Cave-in-Rock, Illinois...Curious World of Crystals; Crystallography and Crystal Chemistry (book reviews) 2:87-88 The Record bookshelf-Crystals...Crystallography and Crystal Chemistry (book reviews) 2: 139-140 The Record bookshelf-Handbook of Crystal and Mineral |
 | | Report (issue) |
| publications they were organized according to a crystal-chemical classification. Cataloged specimens of...exposed along Houchins and Massev creeks east of State Road 795 in the Ash Lawn area. * Department of Environmental...secondary churchite occur on the latter rock. The rocks were found in road construction dumps 0.5 mile south...exposed along Houchins and Massey creeks east of Sute Road 795 in the Ash lawn area. VIRGINIA DIVISION OF...Ridge farm east of Free Union and northwest of State Road 665. APATITE GROUP - Olive-green apatite masses |
 | | Journal (article/letter/editorial) |
| to state I am a rank amateur. I do quite a bit of rock hunting about once a week, then I come back and...at the Holland mine in Washington Camp Mining District near Nogales, Santa Cruz Co., Ariz ARKANSAS—"Last...brassy-yellow, striated pyrite cubes in a cellular quartzose rock, gray in color but stained brown by iron (from the...have been found at Alicante, Lake Co., Colo. my crystal. It is virtually colorless, though an extremely...seen on close examination. Bob gave me a loose crystal of faintly yellowish topaz CONNECTICUT—"The J u |
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| DESIRED PLEASE SEND THEM I N . Abbreviations: xI—crystal fl—fluoresces xled—crystallized ph—phosphoresces...intruding." ARKANSAS—"Enclosed is a very odd quartz crystal (s). It seems to be above 7 in hardness. It will...will make a mark on any average quartz crystal. What do you think of it? It comes from about 7 miles north...Co.), Arkansas on Highway 7. Right side of road in a rock bank. Recovered several of these and some very...lxlí'2-inch, flat, platv, colorless quartz (rock crystal), doubly terminated but instead of two large |
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| desired. Please send them in. Abbreviations: xl—crystal xled—crystallized ALABAMA — Pyrite has been mined...Gov. Gage of California. "The principal rock of the district is granodiorite. The vein is a quartz-filled...surface slickensided, with red staining from opposing rock, probably red sandstone (there are 2 or 3 faults...with the pebbles reads:—"Here is a novelty for your rock collection. They are pumice stones picked up as...only the name of the country, such as Germany or Austria." The clipping showed a picture of the 350 million |
 | | Journal (issue) |
| conservation of mineral localit ies and unusual rock formations. Ever since its foundation in 1928,...memllenhlpe: All members in good standing receive: ( 1 l Rock• and Minerals, a monthly magazine. (2) A member's...society. Mineralogical clubs which subscribe for Rock■ and Mmerals also become affiliated members of the...edited by Ed·ward Salisbury D ana, as for example a crystal of phlogopite from Clark's H ill, St. Lawrence...County, New York (page 633, figure 2) ; and a crystal of clinochlore from W est-town, Chester County |
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| almost two decades. Robert Jones is Senior Editor of Rock & Gem magazine. A graduate of New Haven Teachers...Cycle * Rock from the Deep ® Rock from Sediments * Geodes* Changed Rock ® Cosmic Rock Rock Records "..." Deep Time ® Fossils * Reading Rock " The Great Unconformity 44 SECTION TWO MINERAL KINGDOM Mineral...CoLLecTrors’ WIsDOM The Art of Collecting * # = * Rock Hunting Cleaning & Cataloging Identifying Minerals...Identification Flowchart # Identifying Rocks * Rock Identification Flowchart 94 174 Identification |
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| Old Dexter quarry, Diamond Hill, the Route 114 road cut, and the Iron Hill mine. T H E T O W N S H I... including both the state mineral and the state rock of Rhode Island. Much of this area coincides with... found in overburden and rock piles as well as in the undis turbed rock. The most notable mineral obtainable...and can be worked into a beautiful gem. Several crystal forms of calcite have been found at Con klin,...146 and Wilbur Road; it is the last active source of limerock in the state. The rock being quarried, |
 | | Journal (article/letter/editorial) |
| accurate as possible, the m i l e s northwest of State Road 671. The writers read the original references, and...according to the crystal-chemical classification of Strunz (1957). Microscopic rock-forming minerals...Coun^ I t s ^ P e locality is at Johnson Mill (State Road 712) on the Hardware River, 2 .7 miles southeast...1 9 6 2 ) G o o d exposures are at the Barracks Road Shopping Center in Charlottesville. The Ohio Sulphur...top of Peters Mountain which is southeast of State Road 777. Small amounts of bornite occur in the new soapstone |
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| ....... 370 AFAMOUS FORGOTTEN QUARTZ CRYSTAL LOCALilY, CRYSTAL HILL NEAR DELAWARE WATER GAP, PA. By 0...the trailer house, or what have you, and hit the road for sunny old Spokane. Say, fellows, start the grab...collectors. But even !hose who have never picked up a rock are wondrously impressed with a certain type of... to satisfy someone's curiosity about the local rock phenomenon, and listen patiently to many a "wild...is not possible to say which was first, nor who cut the first slab, a matter which the parties concerned |
 | | Book |
| almost two decades. Robert]ones is Senior Editor of Rock & Gem magazine. A graduate of Copyrigh t© 1999 by...Cycle • Rock from the Deep • Rock from Sediments • Geodes • Changed Rock • Cosmic Rock 32 Rock Records...Records • D eep Time • FossiJs • Reading Rock • The Great Unconformity ~~ .' r·· .... '· :( ' • .. ...COLLECTORS' WISDOM ( 74 The Art of Collecting • Rock Hunting • Cleaning & Cataloging • Identifying Minerals...Identification Flowchart • Identifying Rocks • Rock Identification Flowchart 94 174 Identification |
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| found with the zeolites are the quartz varieties rock crystal, amethyst, and agate, as well as common opal...size from minute to a foot across and may contain crystal groups of one or more of the zeolites, or they...have been obtained from rock blasted from a 0.5 mile of roadway cut. This rock is chiefly found on the...Larry Darling. Additionally, a dump of rock excavated from this cut and located on the west side of the...exercised on this steep slope. It is composed of blasted rock, and anyone working here can easily dislodge boulders |
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| desired. Please send them in. Abbreviations: xl—crystal xled—crystallized ALABAMA — W e are indebted...specimen of large phenocrysts of kaersutite in the rock camptonite, both rare. Kaersutite is given in Dana's...of limonite pseudo after pyrite xl, in gray xline rock, and coming from the Plumose Mts., Yuma Co., Ariz...specimen of rock crystal with inclusions of green chlorite have been received from the Ken Dor Rock Roost (the...from Placerville. W e dug them out of the old Crystal mine dumps but they are all gone now as too many |
 | | 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...crystals from various alluvial deposits; the largest crystal is about 4 cm wide Collection Eckehard Petsch ...beryl is typically given as Be3 Al2 Si6O 18. The crystal structure consists of Si6O 18 rings, which are |
 | | Report (issue) |
| ofthe Sections's activities and include identifying rock and mineral samples submitted by the citizens of...Chief Geologist FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian Institution...the largest emerald crystal in North America -- 1,438 carats. The most expensive cut emerald also comes...Spodumene 15 Garnet 16 Rutile 17 Quartz 17 Rock Crystal 17 Amethyst •• 18 Rose Quartz 18 Smoky... 19 Agate 19 References 20 SAFETY TIPS FOR ROCK AND MINERAL COLLECTORS MINERAL COLLECTING SITES |
 | | Journal (article/letter/editorial) |
| aquamarine (beryl) and was part of a broken gemmy crystal. and fine Magnet Cove collection. It would indeed...terminated, slender rock crystal, lightly stained brown by iron. Six small doubly terminated rock crystals (also...by iron) are grouped at the base of the large crystal. It is a beautiful specimen. Mrs. Lieser is the...northwest 2 miles to a dim road on the left, turn left on upper winding road nearly 2 miles, north y2 mile... Leave car and walk % mile west to a light gray rock (peridotite) exposed in a small stream south of |
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| S. MitchelJ. FEATURES 223 Australia's "Zebra" Rock 224 A Mineral Puzzle Joseph Urban 225 World...made to limit this list to stamps consisting of cut and/or uncut minerals which are not a part of any...expand into this area. Stamps marked "(cut)" are known to depict cut stones only. In most instances, stamps...REFERENCES compilation of this list of mineral, rock, Dorn , N. , and SJagt, C., eds. 1976. R epublic...ANDORRA (FRENCH) September 27, 1969 70 c diamond (cut) ANGOLA 50 c Angolasaurus bocagei 1.00 e fer rometeorite |
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| S. MitchelJ. FEATURES 223 Australia's "Zebra" Rock 224 A Mineral Puzzle Joseph Urban 225 World...made to limit this list to stamps consisting of cut and/or uncut minerals which are not a part of any...expand into this area. Stamps marked "(cut)" are known to depict cut stones only. In most instances, stamps...REFERENCES compilation of this list of mineral, rock, Dorn , N. , and SJagt, C., eds. 1976. R epublic...ANDORRA (FRENCH) September 27, 1969 70 c diamond (cut) ANGOLA 50 c Angolasaurus bocagei 1.00 e fer rometeorite |
 | | Journal (issue) |
| Calaveras County, Calif. GOLD on Quartz—$1,400 Crystal Mine, Angels Camp, Calif. GOLD—1.4 oz. mass, large...Ma dera County, Calif. GOLD on Quartz—$2,750 Crystal Mine, Angels Camp, Calif. KRISTALLE Wayne and...SYMPOSIUM Tucson, Arizona February 13-14,1977 “CRYSTAL GROWTH AND HABIT" In February of 1974 and 1976...The topic chosen for this year’s symposium is “Crystal Growth and Habit.” Dr. Kurt Nassau of Bell Laboratories...technical sessions which include Session I on crystal growth, morphology and compositional variations |
