 | | Book | | Udubaşa (1938, Ocnele Mari, Romania) Director of the Geological Institute of Romania,
Bucharest; President...President of the Mineralogical Society of Romania; Member of the Commission for New
Minerals and Mineral Names...and about 100 articles - one-third
outside of Romania.
Rudolf Duda (1944, Vojany, Slovakia) Head of the...Hungary (Sándor Szakáll)
Poland (Ewa Kos/.owska)
Romania (Gheorghe Udubasa)
Slovakia (Rudolf Duda)
Ukraine...Hungary (Sándor Szakáll),
Poland (Ewa Kos/.owska). Romania (Gheorghe Udubasa),
Slovakia (Rudolf Duda). Ukraine |  | | Catalog/List | | Old No. l Headfnme.
Whi ■ key Hlll Mine,
Tuohnne
County,
CaUfomla
(r■-,u.
.SV•t-
tor cr11•t•J lJaed gold... Few of the minute crystals you see
on mine or quarry dumps or even on cabinet specimens will be satisfactory...at the pristine source underground ar an fresh quarry faces and the like. Very
aften though, such source...feldspar.
784
ADAMITE,
Moha\'.1k
Mine, San Bernardino County, r.alifornia. Group o f colorless to light
green...785
ADAMITE
(CUPRIAN),MohawkMine, San Bernardino County, California. Nicely spaced
transparent jade green | | | Book | | Debrece n. HUN; CG= Constantin Gruescu Collection, Ocna de Fier. ROM : CHTU = ChemistryTechnology Univer ity...eum. Kosice. SLK; GIR = Geological Institute of Romania, Bucharest, ROM; GM= Gold Museum,
Brad, ROM : GYV...Unfortunatel y, mo t of the old collections
have been de troyed and/or dispersed during the
"sto rmy'' centuries...Marinescu (Geological lnstilllte
of Romania): Necolai Terteleac (De. ign-Art-Foto.
Bucharest): Victor Gorduza...State University. [viv). for
advice concerning the de criptions of 1he minerals
and for help in the preparation |  | | Journal (article/letter/editorial) | | form from this temperature to 1470"+ 10o C is B2-tridymite.
Above this temperature B-cristobalite is stable...low temperatureforms of tridymite: a-tridymite stable
below 117oand B1-tridymite stable between 1170and...and reversible. The high temperature form, pr-tridymite persistsbetween 1630and 7470"+ 10o at which temperature...Fenner'sthesisfor the Ph.D. degreewas on the Watchung basalt and
the paragenesisof its zeolites and other secondary...the secondary minerals occurring in the Watchung
basalt Fenner solved two problems,namely: (a) the early |  | | Report (issue) | | 9
(3)
33.34
66.66
.
100.00
(1) Aranyer Berg, Romania; recalculated to 100% after deduction of SiO2 1...processes in titanium-rich andesite, rhyolite,
basalt, etc., and by reactions with xenoliths within these;...magnetite, bixbyite, ilmenite, enstatite-ferrosilite, tridymite, quartz, sanidine,
topaz, spessartine, beryl,...Piski, Romania. In Germany, near Mayen, Eifel district. From Riveau Grande,
Mt. Dore, Puy-de-Dôme, France...New Mexico. From the Nine Mile Pluton, Marathon County, Wisconsin, USA.
From Cerro los Remedios, Durango |  | | Journal (issue) | | WASHINGTON
November 8, 2008
9:00 am to 5:00 pm
Clark County P. U. D. Building
1200 Fort Vancouver Way
Vancouver...
3
Pseudobrookite Twins from the Lemolo Lake Quarry
Don Howard and Kent England
Pseudobrookite was...1878 for material found at Uroiu, Transylvania,
Romania. It is a high temperature mineral, usually formed...the margins of a boulder in the west end of the quarry that was originally collected
in 1982 and 1983...three minerals: enstatite, pseudobrookite,
and tridymite, with ilmenite crystals conspicuously absent. |  | | Journal (issue) | | Institute of Romania
Prof. Dr. Gheorghe Damian, President of the Society of Economic Geology of Romania
Editor...University, Iaşi
Anne-Sylvie Andre-Mayer, Université de Lorraine,
Nancy, France
Ferenc Molnar, Geological...Geological Institute of Romania,
Bucharest
Ioan Pintea, Geological Institute of Romania
Mircea Ţicleanu, Geological...Geological Institute of Romania,
Bucharest
Nicolae Buzgar, "Alexandru Ioan Cuza" University,
Iaşi
Marian...Marian Munteanu, Geological Institute of Romania
Ioan Seghedi, Institute of Geodynamics of the
Romanian |  | | Journal (article/letter/editorial) | | Ordovician altered shales
(now schists) at Salles-de-Rochan, Brittany (Bucher,
1953). An igneous intrusion...coniferous wood, Miocene, McKittrick
Formation, Kern County, California (Adams, 1920)
Epidote, echinoderm,...(Adams, 1920).
Celestite, Eocene fossils, Cluj, Romania (Imreh, 1965).
Cerargyrite (Hartzell, 1906).
Robert...1958).
Onyx (quartz), arachnids, Cenozoic, Bonner Quarry,
Ashfork, Arizona (Petrunkevitch, 1945).
Limonite-Geothite...Pennsylvania, in coal, Llewellyn Forma
tion, Lackawanna County, Pennsylvania (Hoskins,
1964).
Strontianite, ammonite |  | | Book | | Gravity: 3.5-4.2 This pegmatite in San Diego County California (now the site of a housing ment), ...Amblygonite is either white or a light shade of yellow, de Larangeiras, Minas Gerais, Brazil, display. ing internal...include Pala, California, Taos County, New Mexico, and Yavapai County, Arizona. Transparent yellow amblygonite...primarily with the zeolite minerals and calcite in basalt cavities, although it does occur as a primary mineral...Colorado, the Keweenaw Peninsula of Michigan, and the basalt cavities of northern New Jersey. Large transparent |  | | Journal (article/letter/editorial) | | FRIEDRICH,G., and WIECHOWSKI, A., titanomaghemite in basalt, 299 Almandine-grossular and -pyrope garnet solid...505 Amphibole, ferri-ferrohornblende, kirwanite, County Down, Northern Ireland, 253; fibres, flexibility...Greenland, 107 Analcime-bytownite intergrowth in basalt, Skye, Scotland, 382 ANDERSEN,T., carbonatite-related...Asbestos, flexibility, 327 ASHWORTH,J. R., low-tridymite polymorphs, 89 Atacamite, synthesis and stability...Bernardite, new mineral, Yugoslavia, 531 BEUKES,G. J., see DE BRUIYN,H., 385 BEVAN, J., and SAVAGE,S., dissolution |  | | Journal (issue) | | WASHINGTON
May 3, 2003
9:00 am to 6:30 pm
Clark County P. U. D. Building
1200 Fort Vancouver Way
Vancouver...be missed.
Chuck Sweany
Lemolo Lake, Douglas County, Oregon
Doug Merson
Lemolo Lake came to my attention...Lemolo Lake is located in northeastern Douglas County north of Diamond Lake. The
lake is created by a...
The minerals found here are pseudobrookite, tridymite, hornblende, hypersthene, and
apatite. Hypersthene...
although a few crystal groups may be found. Tridymite is the most common accessory mineral
present with |  | | Journal (article/letter/editorial) | | and gabbroic clasts contain more abundant modal tridymite and merrillite, and
more commonly contain augite...mesosiderites were formed by remelting of a mixed basalt-cumulate
gabbro-metal
source region near the parent...pyroxene analyses and the modal abundances of tridymite, merrillite, and augite. Xenocrystic
plagioclase...generally more abundant
tridymite in the former. The average modal abundance
of
tridymite in the basaltic clasts...from 3 to 17%. In contrast, eucrites average
4% tridymite and range from I. 1 to 7.7% (DELANEY et al.,
1984) |  | | Report (issue) | | TIN ORE IN NORTHERN LANDER COUNTY, NEVADA.
By ADOLPH KNOPF.
LOCATION AND DISCOVERY.
Tin ore has recently...recently been found in northern Lander County, Nev.,
in an unnamed short range of hills lying 20 miles north...capped by a great thickness of black basalt, but to the
north the basalt capping is absent and the mesa becomes...in northern Lander County, Nev., and vicinity.
TIN" ORE IN NORTHERN LANDER COUNTY, NEV.
127
was made...flows is the
main rock of the tin-bearing area. Basalt appears in small quantities at the west end of |  | | Report (issue) | | drill cuttings
from EWEB 5 drill hole, Clackamas County, Oregon
by
Terry E. C. Keith and James R. Boaen...under U.S.
Department of Energy, Region X, Grant No. DE-FG51-79ET 2743.
Eugene
Water and Electric Board...4), in the Mount Hood National Forest, Clackamas County,
Oregon (fig. 1).
Drilling commenced on October...Range are exposed in a quarry. About 1/2 km further to the
west of the quarry, rocks of the upper Miocene...groundmass
consists of plagioclase, clinopyroxene, tridymite, and
a-cristobalite.
Glass may have been a major |  | | Book (edition) | | "Dana's System of Mineralogy•·
( 1944, I 951, 1962). de Fourestier (1999) and Strunz
and Nickel (2001).
Mi11eral...abbreviations:
Rep. (republic), prov. (province), co. (county), munic.
(municipio), pref. (prefecture), dept...ASG -Archives de Science Geneve
BM - Bulletin de la Societe fram;aise de mineralogie
et de cristallographie...Uintah County. Utah. and m (2.B. acanthite group). Monoclinic, C2/m, a,b,c
Rio Blanco County. Colorado...Menzenschwand Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts.,
Bavaria. both Germany, and from |  | | Report (issue) | | lies nearly wholly in Lake County, though
Sonoma County. Economic minerals de-
the southwest corner enters...Lake lava
6. Photo of quartz inclusions in olivine basalt
7. Structure sections across Lower Lake quadrangle...volcanic rocks range in composition from olivine basalt to obsidian, and include
intermediate types of...in association with quartz. Much
of the olivine basalt and andesite is quartz-bearing, and locally contains...within Sonoma County, the quadrangle lies entirely
within Lake County. Paved state or county roads offer |  | | Book | | canadien
de la nature
Text copyright © 1994 by Canadian Museum of
Nature/ Musee canadien de la nature...volcanos in Iceland, or black smokers along the Juan de Fuca ridge beneath the
Pacific Ocean, also provide...average density of granite is less than that of basalt. Peridotite,
which is one of the most common rocks...density
greater than that of either granite or basalt. Thus, considering only differences
in density...
P L A T E .4.
Calcite.
Herja, Transylvania, Romania.
s x 7 cm.
Calciteisstableoverabroadrange of
t |  | | Catalog/List | | in lxl inch Basalt
Zeolite
lxl £5
166 II: ■ GISMONDINE
Green road Quarry, Ballyclare, County Antrim
Chalk')'...areas on Basalt.
½ inch £4
I inch £8
Zeolite
169 ■■ GONNARDITE
Hillsport, Island Magee, County Antrim...Antrim, N.lrelan
Quite rich white radiating mass on Basalt
Zeolite
_{
Ix! £6
.~ 242 ■■ GUDMUNDITE
Pezinok,Slovakia...£5
Ix! £8
Fe Sb S
370 ■■ HAINITE
Bortolan Quarry, Pocos de Caldas Minas Gerais,
Small fawn fibres in...OH Cl
385 ■■ MIARGYRITE
Mc Laughlin Mine, Napa County California
black areas in quartz with red Pyrargyrite |  | | Journal (article/letter/editorial) | | striJverite, 605 British Isles ENGLAND Bosahan quarry, Carnmenellis, Cornwall, granite (weathered), kaolinite...fluorite, 4Ol Hazlehead quarry, Penistone, muscovite, I76 Hepworth Iron Co. quarry, Hazlehead, Penistone...Swinden Limeworks quarry, Linton, fluorite, 4oi WALES(Cymru) Dorothea slate quarry, Nantlle, muscovite...CO2metamorphosed lavas, ankerite, chalybite, 119 Binhill quarry, Cairnie, Huntly, Aberdeenshire, tacharanite, scawtite...hornblende-schist, laumontite, prehnite, kaolinite, 608 Hagdale quarry, Unst, Shetland, nickel hydroxide and (?) oxyhydroxide |  | | Journal (article/letter/editorial) | | crosscutting silicates. Euhedral apatites in the Moore County cumulate eucrite occur as
inclusions in pyroxene...K/Th
2000
Moore County
0
= 36
EET 87542
ALH 85001
0.5
EET 90020
agé
Serra de Magé
Pasamonte
...selected for this study. Gray labels (Moore County, Serra
de Mage, Allan Hills (ALH) 85001, and EET 87548)...The
cumulate eucrites ALH 85001, Serra de Mage, Moore
County, EET 87548 were also selected (Fig. 1)...Stannern, Nuevo
Laredo, Pasamonte, Moore County, and Serra de
Mage) and thus have minimal terrestrial |  | | Catalog/List | | plates on 2.5cm calcite and Mn oxides. Merehead Quarry near Frome Mendips £12 • 5 BARYTES creamy platy...crystals in cavity in ferruginous limestone Machen Quarry Caerphilly South Wales 7x5cm £ 10 7 SPHALERITE...pyrite on top, very pleasing at x 10 . Greystones Quarry Launceston Cornwall 4x4 £25 , t 19 SCAWTITE...a 3mm area) on 2x2cm dolerite Carneal Plug Lame County Antrim £8 25 QUARTZ a few crystals on one side... WAVELLITE white radiations on slate High Down quarry Filleigh Devon type location 5x5cm £8 32 STRONTIANITE |  | Oberti, Roberta, Boiocchi, Massimo, Hawthorne, Frank C., Ball, Neil A., Blass, Günter (2017) Ferri-obertiite from the Rothenberg quarry, Eifel volcanic complex, Germany: mineral data and crystal chemistry of a new amphibole end-member. Mineralogical Magazine, 81 (3) 641-651 doi:10.1180/minmag.2016.080.117 | Journal (article/letter/editorial) | | pp. 641–651
Ferri-obertiite from the Rothenberg quarry, Eifel volcanic
complex, Germany: mineral data...in a pale beige silicate vein found from a basalt quarry at Mount Rothenberg, Eifel district, Germany...occurrence after the Caspar quarry at Bellerberg volcano, Eifel region), tridymite, rutile, roedderite and...occurring in vugs
in volcanic rocks at the Bellerberg quarry, Laacher
See district, Eifel, Germany. These authors...This latter sample
is from Coyote Peak, Humboldt County, California,
and was found in inclusions of lithic-wacke |  | | Journal (article/letter/editorial) | | Arthur C., Jr. Beryl from the Oxford mine, Troup County, Georgia
Bailey, Roy A. Volcanism and the upper...Physicaland chemical data for crandallite from Alachua
County, Florida
3-4 473
Boles, James R. Composition,optical...Melanophlogitefrom Mount Hamilton, Santa Clara County,
California
Cooper,W. F. Chargerefinementof a light-atommineral...review]
De lVaal, S. A. Nickel minerals from Barberton, South Africa; V, Trevorite,
redescribed
De Waard...inversesdu MassifCentralfrancais;La Seriede la Sioule(Puy-de-Dome,
[Contributionto the geologyof the inverted |  | | Book (volume) | | BARIUM FELSPARS.166
SILICA MINERALS.179
Quartz, Tridymite, Cristobalite
.
.
.
.
.179
NEPHELINE GROUP...Geological Congress; The Secretary, Consejo Superior de
Investigaciones Cientificas, Madrid; Akademische...perthite, pegmatite, S. of Iron Creek, Pennington County, Black Hills, S. Dakota (Higazy,
1949). Anal. R...unmixed to oligoclase and orthoclase), larvikite, quarry near
Larvik, near Oslo, Norway (Muir & Smith, 1966)...eutectic tempera¬
ture between potassium felspar and tridymite is placed at 990°C.+ 20°C. at a
composition leucite |  | | Book (volume) | | 256
Composition, 256
Occurrence, 257
TRIDYMITE
High-Tridymite
259
259
Structure, 259
Morphology,... 261
Physical Properties, 263
Middle-Tridymite
Low-Tridymite
Structure, 264
Morphology, 264
264
264...High-quartz
573-870°
Low-tridymite
Below 117°
Orthorhombic
Middle-tridymite
High-tridymite
117—163°
163—-1470°...Herschel, Biot, Weiss, Rose, and Des Cloizeaux.
Tridymite, the first polymorph of silica to be recognized...1889 and was later shown to occur in
nature. Tridymite has since been found to include a group of three |
|