 | | Journal (issue) | | ...................... 3 The Many Varieties of Quartz ................................................................................. 5 Meet the Quartz Family .............................................Varieties of Quartz by Denise Bicknell Member of the Houston Gem & Mineral Society he mineral quartz, SiO2...Properties of Quartz: To understand quartz we must first describe what makes it uniquely itself. Quartz is composed...and is represented by the chemical formula SiO2. Quartz crystallizes in the trigonal system and shows three-fold |  | | Book (edition) | | gem stones mon dull are as hard or harder than quartz, a com- mineral everywhere present as dust which...Hardness Scale 6. Orthoclase 1. Talc 2. Gypsum 7. Quartz Topaz Corundum 10. Diamond 3. Colcite 8. 4...Your will scratch orthoclase feldspar but not quartz. In making hardness appears to be a scratch paper...the general arrange- ment of these surfaces. Quartz and amethyst, for example, are frequently crystallized...SPODUMENE DANBURITE DATOLITE GARNET FLUORITE QUARTZ CRYSTALS SPINEL STAUROLITE •^^ VESUVIANITE |  | | Report (volume) | | the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized. The best...Fluorite Apatite . 6. 7. 8. 9. 10. Orthoclase Quartz Topaz Corundum Diamond The numbers preceding each...of silica (quartz, 7 on Moh's scale) particles, a gem stone should be harder than quartz. Some minerals...react to heat are: violet quartz (amethyst) changing to orange brown, smoky quartz to yellow, pale-green...sapphire, star sapphire, star ruby, rutile, and quartz are gem stones that have been successfully synthesized |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Book (edition) | | describes sites under of the nearest town and county. and the many maps included book contain such...4B^ Diamond M Tourmaline ^P Ruby. Sapphire O Quartz crystal ^J^ Garnet __ Azurite, Malachite, Chrysocolla...with respect to one another. gem minerals The quartz gems, such as amethyst, form crystal prisms with...another at 60 degrees and intersected by a fourth Quartz and vertical axis at right angles to the other...other, light) FELDSPAR TWINS I J PHENACITE QUARTZ CRYSTALS ffrl (^h /&> ^& \b^ ^ VESUVIANITE |  | | Book | | Catalog Card Number: 74-1276 The pictures of gold-in-quartz, smithsonite, stilbite, and wulfenite on the front...learn that gravel beds are rich in such minerals as quartz, feldspar, mica, garnet, tourmaline, magnetite...Schists often contain feldspar, garnet, mica and quartz. With sapphires are often found associated an abundance...oxide. Chalcedony, one of the common varieties of quartz, was formed in the same way. Pegmatites and Hematites...contains as its principal com¬ ponents feldspar, quartz and mica it is known as pegmatite. Most of our |  | | Book (volume) | | from 18’ to 27’ long. In addition, gem Garnets, Quartz crystals, Topaz and Tourmaline add to the fascination...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Diamond M Tourmaline fQl Ruby, O Sapphire Quartz crystal 'y^ Garnet — Azu rite, Malachite, Chrysocolla...fluor-spar from Derbyshire or, perhaps, a pyramid of smoky quartz from Cumberland. The next it may be rock crystal...Talc 6. Orthoclase feldspar 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite 9. Corundum...faces are placed with respect to one another. The quartz gems, for example, such as amethyst, form crystal |  | | Book (volume) | | ...........................................444 Texas .................................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ................................................................................49 Arkansas County Map .......................................... |  | | Book (edition) | | Phone (907) 586-1785 Jade, gold, serpentine, quartz, asbestos, rhodonite, chrysoprase Fossils Garnets...Black quartz, "coontail” quartz, titanium with brookite Quartz crystals Quartz crystals Quartz crystals...crystals Quartz crystals Diamonds Smithsonite CALIFORNIA A. Wilson, Box 281, Baker. CA 92309. "Sheep-Creek...Picture agate and jasper (was called "Calico Jasper Picture Rock Mine") Red jasper Mariposite Jade ...antigorite, serpen¬ tine, diopside, garnet, jade, quartz Tremolite or "Calif. tigereye " Chalcedony onyx |  | | Journal (article/letter/editorial) | | specimens at the famous Magnet Cove, Hot Spring County, Arkansas. I have just received a report from the...1949, R & M, attention was called to a ledge of jasper on the shore of San Francisco Bay. This place is...around the fireplace in my living room is made of jasper from this locality with alternate slabs of green...inches in size. I am sending you some slabs of this jasper—Nos. 1 and 2 are like the ones in my fireplace—and...furnishes plenty of nice jasper. "The green chalcedony is from Marin County, north of San Francisco. |  | | Book (volume) | | gold-bearing areas. Lode deposits usually consist of Quartz veins in solid rock, while placer deposits occur...Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE: area barite |  | | Book (volume) | | Celestite crystals, chalcedony rosettes, agates, jasper, fossil plants and vertebrate remains. The breaks...for its agates, chalcedony, jasper and gem petrified wood. BUFFALO COUNTY KEARNEY, area gravel bars and...the W of townagate, chalcedony, jasper, petrified wood. CASS COUNTY WEEPING WATER, SE, on rd. to Nehawka...Quarry chalcedony, jasper, fossils. CHERRY COUNTY VALENTINE, in the Sandhills county along the Niobrara...hillside surfacesagatized and opalized wood, agate, jasper; in draws and washes and gravel beds of Spring |  | | Journal (article/letter/editorial) | | 549 E. Cedar, Globe, Ariz., sent in a massive smoky quartz specimen coated with tiny, lustrous, brown vanadinite...south Gila County, is in central Arizona. ARKANSAS —• "I am sending you some unusual quartz crystals....terminated. North Little Rock, in central Pulaski County, is in central Arkansas. CONNECTICUT—Mrs. Cecil...of which consists of white platy barite, tiny smoky quartz xls, tiny xl masses of brassy yellow chalcopyrite...Conn." •—on label. Newington, in central Hartford County, is in central Connecticut. MAINE—A few months |  | | Book (volume) | | in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare alluvial Diamond. THEBES:...the Mississippi R.⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi...Amethysts, or Quartz crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T...S, R. 10 E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare alluvial Diamond. THEBES:...the Mississippi R.⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi...Amethysts, or Quartz crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T...S, R. 10 E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Report (issue) | | Austin Austin, Texas 78712 JOHN T. LONSDALE, Director Report of Investigations — No. 42 Texas Gemstones...OFECONOMIC GEOLOGY The University of Texas at Austin Austin, Texas 78712 JOHN T. LONSDALE, Director —...— No. 42 Report of Investigations Texas Gemstones By Elbert A. King, Jr. February 1961 — — — Second...gemstones Cabochon gems Faceted gems Tumbled gems Texas gemstones Amber Augite Beryl Celestite Diamond Epidote...Jet Labradorite Microcline Obsidian Opal _ Pearl Quartz Chalcedony Sanidine Spinel Tektite (bediasite) |  | | Book (volume) | | ...........................................380 Texas ................................................................................458 Appendix B - Quartz Family Gemstones ................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham |  | | Book (volume) | | ...........................................380 Texas ................................................................................460 Appendix B - Quartz Family Gemstones ................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham |  | | Journal (issue) | | ..................................... AMETHYST-SMOKY QUAR1Z-TOPAZ IN NORTHERN NEW HAMPSHIRE. By Harold......................... RARE EGYPTIAN PICTORIAL JASPER EXHIBIT ............................ SAND BARITE.................................. (0PPER•STAINED QUARTZ FROM ARIZONA ....................................ASSOCIATION lock Vol. 20, No. 6 ardally AMETHYST - SMOKY QUARTZ ritaIn Northern New Hampshire •eek IJU• ,ubBuPril...localities where a large quantity of amethyst and smoky quartz, and a smaller amount of topaz have been found |  | | Journal (article/letter/editorial) | | a green rock found in Fairplay, Colo., in Park County. Would you please identify it for me?—asks Elizabeth...it is a very nice one. Fairplay, in western Park County, is in central Colorado. C O N N E C T I C U T...Lane, Bloomington, Ind. North Vernon, in central County, is in S/E Indiana. Jennings MAINE—Gerald Arquette...specimen consisting of tiny rock xls in white granular quartz. "From the Harvard Mine we found quite a few of...near Greenwood, and Greenwood, in southern Oxford County, is in western Maine. MASSACHUSETTS—"I am becoimng |  | | Journal (article/letter/editorial) | | mining in upper California—at Trinidad, Humboldt County. Trinidad is a little town on the Pacific coast...State. No. 1 is from Dukes Creek, L.L. 89, White County. These sands are fairly coarse and locally called...River in the Nacoochee Valley, L.L. 75 & 76, White County. This location receives the sands from Dukes Creek...present—black magnetite, brown monazite, colorless quartz, black rutile, and colorless zircon that fluoresces...epidote, black magnetite, brown monazite, colorless quartz, black rutile, large brownish-black staurolite |  | | Journal (article/letter/editorial) | | Va. It is a coarse, brown sand consisting of smoky quartz, whitish feldspar, black biotite and black magnetite...consists chiefly of quartz (brown chalcedony, also gray; clear quartz, also smoky) with some white (also...dark red) with small amounts of colorless to smoky quartz, whitish feldspar, black hornblende, greenish...granulated sugar). It consists entirely of colorless quartz). It "Alligator Point, N / W coast of Florida at...chiefly of black, lustrous ilmenite and colorless quartz, with minor amounts of black, lustrous magnetite |  | | Book (edition) | | W r CRYSTALS NOT PISTOLS S'- GEM TRAILS OF TEXAS 1 A Field Guide for Collectors By Bessie W. Simpson...GEM TRAILS PUBLISHING CO. P. O. Box 828 Bowie, Texas 76230 ! Copyright 1958; 1962; 1967 Bessie W. Simpson...CYCADS INDIAN ARTIFACTS AGATIZEO WOOD 3 T TOPAZ SMOKY QUARTZ GARNETS \ AGATE ( Pom Pom) V AGATE ( Plume)...ARTIFACTS \ SELENITE TEKTITES \ \ \ l AGATE 5 JASPER WOOD(Polm) 2 \ \ . CONTENTS 4 5 Foreword.............. New Collecting Areas as you Travel Texas. SECTION I 6-7 8-9 10-11 12-13 14-15 16-17 18-19 |
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