 | | Report (issue) | | Austin Austin, Texas 78712 JOHN T. LONSDALE, Director Report of Investigations â No. 42 Texas Gemstones...OFECONOMIC GEOLOGY The University of Texas at Austin Austin, Texas 78712 JOHN T. LONSDALE, Director â...â No. 42 Report of Investigations Texas Gemstones By Elbert A. King, Jr. February 1961 â â â 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) |  | | Journal (article/letter/editorial) | | THE ROCKS OF TEXAS â T h e Southwest G e m by M R S . P E A R L G A R R I S O N Downloaded by [University...presently occurring i n Texas, and i f you count the crystalline varieties of quartz separately, that makes...right, 36 varieties of gem rocks can be found in Texas. Let's take them alphabetically: AMBERâa rich brown...ceous coal, and i n Terlingua Creek in Brewster County. T h e amber found in the G u l f Coastal Plain...quality. AUGITEâoccurs near Eagle Flat, Hudspeth County, in dark greenish-brown resembling obsidian, weathering |  | | Report (issue) | | „ TEXAS ROCKS AND \ r - An Amateurâs Guide ;s ROSELLE M. GIRARD A b OF ECONOMIC GEOLOGY V N IVERSITY...The University of Texas Austin, Texas Peter T. Flawn, Director Guidebook 6 TEXAS ROCKS AND MINERALS...Rock identification charts Descriptions of some Texas rocks and minerals Anhydrite ................................................................... Quartz .................................................Composition, hardness, and specific gravity of some Texas minerals Pace 25 26 39 40 43 43 43 44 45 46 47 |  | | Journal (issue) | | informative mineral features". The authors describe quartz, feldspar, mica and others in terms of what the...Huizing, 534 I Thrasher Dr, Cincinnati OH 45247 USA Please, make checks payable to Mineralogical Almanac...discoYered amazon stone in Custer County, aquamarine and rose quartz at the Wild Rose claim (later known as the...the Devils Hole pegmatite), Fremont County and facetable almandine garnets near Canon City. Charles A....and gem miner, leased the Wild Rose claim from Endicott for its rose quartz in I 907. For the next 13 years |  | | Journal (issue) | | MINERAL COLLECTIONS IN TEXAS III A SUPPLEMENT TO THE MINERALOGICAL RECORD, NOVEMBERâDECEMBER 2020 ... Mineral Collections in TEXAS UVolume IIIV With an Introduction by Wendell Wilson A Supplement to...NovemberâDecember 2020 MINERAL COLLECTIONS IN TEXAS Mineral Collections in Texas Volume III A Supplement to The Mineralogical...Spann collection; Tom Spann photo. Fluorite with quartz, 11 cm, from Fujian Province, China. Keith & Diane...twin, 5.5 cm, from the Amo tin deposit, Ximeng County, Yunnan, China. Wally Mann collection; Joe Budd |  | | Report (volume) | | persons. The most popular gem cuts are the cabochon, rose, brilliant, step, and mixed. The carat, one-fifth...the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized. The best... transparent stones. The desired hues are blue, rose, green, and true canary yellow in the diamond; pigeon-blood...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 |  | de Miranda Pinto, Luiz Carlos B., Righi, Ariete, Lameiras, Fernando Soares, da Silva Araujo, Fernando Gabriel, Krambrock, Klaus (2011) Origin of the color in cobalt-doped quartz. Physics and Chemistry of Minerals, 38 (8) 623-629 doi:10.1007/s00269-011-0434-3 | Journal (article/letter/editorial) | | ORIGINAL PAPER Origin of the color in cobalt-doped quartz Luiz Carlos B. de Miranda Pinto · Ariete Righi...Springer-Verlag 2011 Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at...Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state...spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the...agreement with this model. The results for Co2+ in quartz are diVerent from Co-bearing spinel and staurolite |  | | Journal (article/letter/editorial) | | symbol to promote outstanding aspects of their county or state. Approval is usually not difficult because...ALABAMA: Star Blue Quartz Alabama State Senator Don Hale proposed that star blue quartz be named the state...29 March 1990 through Act No. 90-203. Star blue quartz is found only in a 32 Ă 80-kilometer rectangular...least 1966. Fist-sized nuggets of anhedral blue quartz with an opalescent or waxy luster have been found...excavations 36 ROCKS & MINERALS Figure 1. Rough blue quartz, 7 cm across, from the Inner Piedmont Province |  | | Journal (article/letter/editorial) | | dlondon@ou.edu Part 4 Reading Pegmatites What QUARTZ and FELDSPARS Say T his is the fourth of several...environment in which they form. The series continues with quartz and the feldspars. Dr. David London is a Stubbman-Drace...in composition. By definition, that means that quartz and feldspars (including the plagioclase and the...percent of the rock. In the common pegmatites, quartz and feldspars constitute nearly 100 percent of...mineral species documented), consists of 33 percent quartz, 29 percent sodic plagioclase, and 20 percent K-feldspar |  | | Journal (issue) | | September-October 201â Mineral Collections in Texas A Supplement to The Mineralogical Record September-October...Calcite-Kevin & Mark Brown collection, page 52; Smoky quartz gwindel-Brent Lockhart collection, page 175; Aquamarine-Wally...Carol & Karl Waming James & Charelle Webb Gary & Rose White Stretch & Lynn Young Introduction The Lone...those found in neighboring Arizona and New Mexico; Texas is oil country, and many fortunes have been made... but all are worthy of study and appreciation. Texas collections generally tend tobe very broad in scope |  | | Journal (issue) | | a large collecti?n of iris agate and asteriated quartz. Pictures of the two exhibits mentioned above are...White Horse Ranch to the Blitzen Valley, (Harney County, Oregon} and on the way I picked up some pieces...looked like slag from a furnace. This was in Grant County, Oregon, about 5 miles from Seneca. I was on a...pegmatites the crystals and grains of these minerals ; quartz, feldspar, mica, etc. ha,·e gro,vn to much larger...3x3x8 feet in the Luella Mine near Avon, Latah County, Idaho ; and etc. Origin The crystals have reached |  | | 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...INDIAN ARTIFACTS AGATIZEO WOOD 3 T TOPAZ SMOKY QUARTZ GARNETS \ AGATE ( Pom Pom) V AGATE ( Plume) I.............. New Collecting Areas as you Travel Texas. SECTION I 6-7 8-9 10-11 12-13 14-15 16-17 18-19...Edidote and Quartz Crystals........... Topaz and Quartz................. ......... TopazâMason County ..... |  | | Report (volume) | | Deposits of minerals of wide distribution, such as quartz and calcite, have been omitted, except those that..........Mr. George H. Ashley, Washington, D. C. Texas............Dr. William B. Phillips, Austin. Vermont...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson |  | | Report (volume) | | 248 259 269 271 275 281 r 4 CONTENTS. Page. Texas...................................................of minerals that are widely distributed, such as quartz and calcite, have been omitted, except those that...New Mexico, Oregon, South Dakota, Tennessee, and Texas; to list all the literature consulted would be impracticable...Phillips, W. B., The mineral resources of Texas: Univ. Texas Bull. 365, Sci. Ser. 29, 1914. Among other...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Catalog/List | | enlarged photograph of a piece of Obsidian, from Lake County, Oregon, which shows a Conchoidal fracture. t...Each lxl" 2x2" 2x3" ED.ch 3x4" AGATE-See Quartz AESCHYNITE-See Eschynite ALABANDITE (maganese sulfide)...*Peristerite (Moonstone), opalescent Cleavage, with quartz showing albite twinning or polysynthetic twin bands...potassium, iron, manganese and titanium) Bladed in quartz; Colorado ....... ................ .50 .60 ...0 BUST AMITE ( calcium manganese metasilicate) Rose -pink, in rock; New Jersey..................... |  | | Catalog/List | | Amphibolc AEGIRINE-AUGITE-Sce Pyroxene AGATE-Sec Quartz ALABANDITE (magancsc sulfide) Xline, with sphalcritc...Peristerile (Jvfoonstone), opalescent cleavage, with quartz showing albite twinning or polysynthetic twin bands...potassium, iron, manganese and titanium) Bladed in quartz; Colorado . . . . . . . . . . : . . . . . . . ...BISMUTITE (A basic bismuth carbonate} ,\llassi/Je with quartz; New Mexico, 1 x 2 ", 1 . 5 0. . . . . . 170 BITUMINOUS... . . . . .. . 2 Crysta/{ine Pink, fluorescent; Texas . . . . . . . . . . . . . .. .. . . .. . . . 92 |  | | Book (edition) | | mmed at Broken Arrow aud Trout creek, in Sc. Clair county. The strata in this field are more faulted und...prong of Canoe creek, in St. Clair county, to Ha\sop creek, in Bibb county, a distance of 60 miles. Down to...to Helena, in Shelby county, the field has an average width of 5 or 6 miles. Below that point the width...miles being in the latitud" of Blocton, in Bibb county. The south ern end of this field has a greater...Jefferson county; Helena, Montevallo, and Brierfield, Shelby county; and at Blocion. Bibb county. The Warrior |  | | 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 |  | | Report (volume) | | ................................. Androscoggin County............................................. Auburn......................................... Lincoln County ............................................................-...:.....-................. Oxford County........................;............................................................. Sagadahoc County.. '...... ............................................................................ Hartford County ..... ....................:............ ...... |  | | Journal (issue) | | in the first place. And if you want to know the county (foreign money orders demand it), it is Westchester...obtained. close assoc1at1on with crystalline pyrite, quartz, beryl, dolomite, and parisite. This latter mineral...consisting, on the exterior, of milky quartz, lined with small crystals of quartz ("verdacho"). Within this is...east of Asheboro, in the southern part of Randolph County, North Carolina, is a prominence that rises above...Limonite, as encrustations; Pyrite, as minute cubes; Quartz, as milky masses and as small Rock Crystab in cavities; |  | | Book (volume) | | from 18â to 27â long. In addition, gem Garnets, Quartz crystals, Topaz and Tourmaline add to the fascination...beds, excavations, etc.ïŸSelenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...ïŸgray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.ïŸpetrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: ï 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 â Azu rite, Malachite, Chrysocolla...from Derbyshire or, perhaps, a pyramid of smoky quartz from Cumberland. The next it may be rock crystal...agate, cut and polished, its concentric rings of rose, ivory and carmine enclosing a turbulent mass of...Talc 6. Orthoclase feldspar 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite 9. Corundum |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.âŻcone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Toddâs Ford, a mineral depositâŻHematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarriesâŻoilstone. DELAWARE COUNTY DELAWARE...nodulesâŻPyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) âŻHematite. HOCKING COUNTY AREA |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.âŻcone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Toddâs Ford, a mineral depositâŻHematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarriesâŻoilstone. DELAWARE COUNTY DELAWARE...nodulesâŻPyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) âŻHematite. HOCKING COUNTY AREA |  | | Catalog/List | | gypsum, calcite, fluorite, apatite, microcline, quartz crystal, topaz, corundum, bauxite, copper, bornite...limonite, galena, sphalerite, graphite, halite, rose quartz, flint, jasper, marble, orthoclase, pyroxene...pyro xene, amphibole, olivine, garnet, cpidotc, quartz, flint, magnetite, hematite, limonite, pyrite,... Olivine Opal Orthoclase Prehnite Proch lorite Quartz Riebeckite Rutile Siderite Staurolite Titanite...Tourmaline Trcmolitc Vcsuv ianitc ( l docrase) Z ircon Quartz-Pyrite Hematite MC 200. Above Collection (wt |
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