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| | Journal (article/letter/editorial) | | chemistry and Sm–Nd age correlation
of magmatic pegmatite garnet overprinted by
eclogite-facies metamorphism...University of Vienna, Althanstr. 14, A-1090 Vienna Austria
Institute of Mineralogy and Petrography, University...University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria
Accepted 17 January 2007
Abstract
Meta-pegmatites...relationships with other pegmatite
minerals indicate that garnet crystallized during pegmatite emplacement. Whole...though continuous garnet crystallization during pegmatite-emplacement. This was supposedly
related to low | 👁 Image
| | Journal (article/letter/editorial) | | University of Vienna, Althanstrasse 14, A-1090 Wien, Austria
Institut für Mineralogie und Petrographie, University...University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
a r t i c l e
i n f o
Article history:
Received...single grain, EMP or SHRIMP Pb isotope analysis of zircon,
monazite, or allanite) where correlation of the...radiogenic
isotope information of trace minerals. Zircon (e.g., Rubatto, 2002;
Hermann and Rubatto, 2003;...al., 2001,
modified) and some dated (meta-)pegmatite outcrops. SI = Silvretta; EW = Engadine window; Ötz | 👁 Image
| | Report (issue) | | Gorbatschev 987) and comprises a volcano-metallogenetic district rich in mineralisations of several types. These...eastwards into southern Finland and the Orijärvi district (e.g. Gaál 990). Its northern and western areas...sedimentation. The metavolcanic rocks yield U-Pb (zircon) ages around 880–900 Ma (e.g. Lundström et al...(Riddarhytte malmfält in Swedish), Skinnskatteberg district (Fig. 7), the oldest bedrock is dominated by Palaeoproterozoic...7 20 km Quartz porphyry Granite, deformed Pegmatite Metavolcanic rock with skarns Granodiorite, | 👁 Image
| | Book (volume) | | pans. Many other gem crystal species occur in pegmatite exposures, such as
Aquamarine, Beryl, some Ruby-red...areaAlmandite garnet; (g) harmony Church, area pegmatite
outcropsBeryl; (h) Hickory Flat, 2 mi. NE on rd....mi. region surrounding this town contains many
pegmatite dike minesMica minerals, Quartz crystals, Aquamarine...smoky).
ATLANTA, Emory University, area pegmatite outcropsQuartz crystals (clear,
BARNESVILLE, THOMASTON...NW of the Covington hwy. on the Philips rd., a pegmatitegreen
Muscovite, Feldspar, Quartz.
STONE MOUNTAIN: | 👁 Image
| | Book (volume) | | Murphrees Valley, as a
narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals.
CALHOUN...area⎯Barite.
CHEROKEE COUNTY
CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...of the Louisville and
Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers...in the United States
CLARKE COUNTY
AREA, vein outcrops along county roads⎯chert (resembles chalcedony)...bed⎯dark yellow
ocher.
CLAY COUNTY
AREA: c pegmatite outcrops in the mica schists, as large platy books | 👁 Image
| | Book (volume) | | Murphrees Valley, as a
narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals.
CALHOUN...area⎯Barite.
CHEROKEE COUNTY
CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...of the Louisville and
Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers...in the United States
CLARKE COUNTY
AREA, vein outcrops along county roads⎯chert (resembles chalcedony)...bed⎯dark yellow
ocher.
CLAY COUNTY
AREA: c pegmatite outcrops in the mica schists, as large platy books | 👁 Image
| | Journal (article/letter/editorial) | | Minerals of the
PACOIMA PEGMATITE
Los Angeles County, California
Downloaded by [New York University]...crystals of allanite and zircon attract
collectors to this southern California pegmatite.
WILLIAM P. MOLLER...UNUSUALLY LARGE ALLANITE crystals occur in a
pegmatite that crops out in Pacoima Canyon only a few
miles...found irregularly distributed throughout this pegmatite in pods and lenses of
perthite. The crystals are...giants are large, exceptionally well-developed zircon crystals. Hornblende crystals as
much as 1 meter | 👁 Image
| | Book (volume) | | ......................258
Missouri – New Lead District Map .........................................................325
New Jersey – Franklin Mining District Map ............................................Texas – Fluorite in the Terlingua Quicksilver District .................................455
Texas – Sulfur..............502
Vermont – Orange County Copper District Site Map ...................................503...Murphrees Valley, as a
narrow strip of scattered outcrops about 5 mi. longManganese minerals.
CALHOUN | 👁 Image
| | Book (volume) | | fossils. There are no
igneous or metamorphic rock outcrops in Indiana.
The four great periods of glaciations...Gold, Pyrite, Ilmenite,
Corundum, Garnet, Diamond, Zircon. (Diamonds from Indiana’s stream gravels, found...
FREMONT COUNTY
AREA, all Devonian limestone outcrops, gemstone quality⎯fossil corals and
stromatoporoids...the Tri-State District, where Kansas,
Missouri and Oklahoma join boundaries. This district is interesting... Logan, Trego, and
Wallace counties. Regional outcrops of shale disgorge Selenite crystals.
ANDERSON | 👁 Image
| | Book (volume) | | fossils. There are no
igneous or metamorphic rock outcrops in Indiana.
The four great periods of glaciations...Gold, Pyrite, Ilmenite,
Corundum, Garnet, Diamond, Zircon. (Diamonds from Indiana’s stream gravels, found...
FREMONT COUNTY
AREA, all Devonian limestone outcrops, gemstone quality⎯fossil corals and
stromatoporoids...the Tri-State District, where Kansas,
Missouri and Oklahoma join boundaries. This district is interesting... Logan, Trego, and
Wallace counties. Regional outcrops of shale disgorge Selenite crystals.
ANDERSON | 👁 Image
| | Book | | Rocks; Minerals Found in
Igneous Rocks; Granite Pegmatite Gems and Minerals; Hydrothermal
Mineral Deposits;...aphtali).
Third row: ligure (possibly jacinth, yellow zircon, or hyacinth, e.g.,
essonite garnet; an undetermined...find throughout the region, especially in the pegmatite
intrusions (dikes) of New England, New Jersey...found in
veins, dikes, stream gravels and benches, outcrops, and as "float" over
the widespread lower surfaces...the heart of the then most prolific metal-mining district of central Europe, and although he did not enjoy | 👁 Image
| | Report (issue) | | gained notice
as a gemstone distinct from ruby or zircon.
Turamali from Ceylon
According to Dana and Brush...used by native jewelers
to refer to the yellow zircon commonly found in
Ceylon (Smith, 1912). Dana and...the turamali, there were some gems that
were not zircon, but were quickly discovered to
be new. The Amsterdam...hardness
and color of zircon and tourmaline can be similar,
the specific gravity of gem zircon (as high as
4...tourmaline gems
weigh quite noticeably less than zircon of equal
size and cut.
Circa mid-1700s
Clark | 👁 Image
| | Journal (volume) | | Friedrich Koller University of Vienna, Vienna, Austria Victor Kvasnytsya Institute of Geochemistry,...fragments. In addition to these minerals, barite, zircon and monazite fragments were detected in the andesite...Investigated crystals were collected in two distinct pegmatite bodies near the city of Equador, RN, Brazil: Jacu...REDFERN, 1997). For natural sample from Jacu pegmatite (sample: 2018) they are: a = 4.7814(2) Å, b =...331(5)° and for natural sample from Mina do Santina pegmatite (sample: 1474): a = 4.7842(3) Å, b = 14.3391(6) | 👁 Image
| | Book (volume) | | Mount Malosa, Chilwa alkaline province, Zomba district.
"Illite" is the name of a series of incompletely...the 2003 Tucson show.
MOROCCO
Imilchil area. Outcrops of episyenite and of contact-metamorphic
skarn...crystals from 2 to 5 cm across occur
with good brown zircon crystals (Britvin, Ivanyuk andYakovenchuk,
1995;...is the source of the large, lustrous, rich brown zircon
crystals which arguably are world's best for the...matrix of white albite, sometimes
with the brown zircon crystals. Evseev (1995a) gives 11 cm as the
maximum | 👁 Image
| | Book (volume) | | for gems and gemstones: quartz family
minerals, pegmatite crystals, Turquoise, agatized and opalized wood...(b) toward S end of the Pine Nut Mts., area pegmatite outcrops Thulite (pink
Zoisite), Topaz; extreme...Silver, Platinum.
ELKO COUNTY
CARLIN: area pegmatite outcrops in surrounding hillsRose Quartz;
nearby...Silver
minerals; area gravels, surfaces and outcropsCitrine, Rose Quartz, wonderstone;
NW 8 mi....until the 1950’sGold, Lead, Silver; area rock outcropsRose Quartz.
This mining dist. was located with | 👁 Image
| | Book | | Poisons and Venomous Bites,
Pregnancy,
124
Austria,
Germany,
76
Epilepsy,
Russia,
Portugal,
...Treatment for Cabochons,
Australia, 363
331
Austria,
Beryl Carvings, 332
Faceted Gems,
and
Gems...Dr.
K.
CA; Milton
Switzerland; Hans Stern,
Austria; the United States
and its several branches and...library
at
Res-
CA; Victoria and Albert Mu-
Austria; David P.
Wilber, Fallbrook,
AZ; and Miriam and...accompany the mica
well.
original
which
to
tens
outcrops
home of mankind is India,
today,
to
mineral | 👁 Image
| | Book (volume) | | also quarried a rough, porous flintstone from outcrops, especially around
McArthur, Vinton Co., for making...Bolivar to Zoar Station, as nodules in limestone outcrops⎯flint.
VINTON COUNTY
AREA: c Swan Twp., on Upper...McCloud on Rte. 62 to Crater Lake: (a) area basalt
outcrops⎯Natrolite; (b) draws, washes, slopes, etc.⎯Quartz...gem Corundum crystals are still gathered from pegmatite exposures in these counties.
Mountain stream gravels...Orthoclase,
Limonite, Quartz crystals, Tourmaline, Zircon.
ST. CLAIRSVILLE, take the Pennsylvania Turnpike | 👁 Image
| | Book (volume) | | also quarried a rough, porous flintstone from outcrops, especially around
McArthur, Vinton Co., for making...Bolivar to Zoar Station, as nodules in limestone outcrops⎯flint.
VINTON COUNTY
AREA: c Swan Twp., on Upper...McCloud on Rte. 62 to Crater Lake: (a) area basalt
outcrops⎯Natrolite; (b) draws, washes, slopes, etc.⎯Quartz...gem Corundum crystals are still gathered from pegmatite exposures in these counties.
Mountain stream gravels...Orthoclase,
Limonite, Quartz crystals, Tourmaline, Zircon.
ST. CLAIRSVILLE, take the Pennsylvania Turnpike | 👁 Image
| | Journal (article/letter/editorial) | | these minerals which I obtained in 1936. The pegmatite from which they came is the old, classic locality...the early days was conducted on an exposure of pegmatite on the upper flank of the mountain forming the...ft. to the southeast. All of this work is in pegmatite, but the exposuresare insufficient to indicate...apart, and, as far as could be learned, no pegmatite outcrops have been located in the intervening section...that we have to do with two outcrops of one and the same dyke. The pegmatite consists predominantly of | 👁 Image
| | Book (volume) | | which also
produced a most remarkable series of pegmatite dikes ranking with those in Maine and
Southern...Hills Dist.
Includes both Veins and the extensive pegmatite dike exposures and mines.
BON HOMME & CHARLES...Kasolite, Quartz
crystals, Mica, Tourmaline and Zircon (reddish brown crystals); W 14 mi. on US 16 to...Alt. 16 for 15 to 17 mi.
(near Rte. 79), pegmatite outcropsRose Quartz; S along US 385 for 32 mi....Co., all regional side rds., look for limestone outcrops and
ridgesFairhill agates; in Bull Moose mine | 👁 Image
| | Journal (issue) | | 1
R.I. ANOMALIES IN TOURMALINE
AND A STRANGE ZIRCON
By R. KEITH MITCHELL, F.G.A.
P
A P E R S by Chas...encountered another strange stone,
a drop-shaped zircon of 14-33 carats which, when taken from its
stone...the easily observed
aspects of a spectrum. This zircon shows no apparent changes in
its absorption spectrum...
Bank, H . and Berdesinski, W . Über Phänomene bei der Refraktometer ablesung gewisser turmaline,
Z...some consideration to the maker's literature.
. ZIRCON
STRONTIUM TITANATE
YAG
CORUNDUMv
\,
DIAMOND
| 👁 Image
| | Journal (issue) | | Zoned eosphorite from Lavra da Ilha, Taquaral district,
M inas Gerais, Brazil .........................(1969) by Akademische D ruck- v. Verlagsanstalt, Graz, 19, 7-8.
P O G G E N D O R F , J. C. (1863) Bi...million years old.
Almost all outcrops are phacoidal gneiss.
The pegmatite crops out in a gulch on the...stopes and small pits have been
developed.
The pegmatite body strikes N40°E with a 30° NW dip. It is zoned...controlled by fractures striking parallel to the
pegmatite body but dipping 50° NW.
The vugs are typically | 👁 Image
| | Journal (issue) | | Zoned eosphorite from Lavra da Ilha, Taquaral district,
M inas Gerais, Brazil .........................(1969) by Akademische D ruck- v. Verlagsanstalt, Graz, 19, 7-8.
P O G G E N D O R F , J. C. (1863) Bi...million years old.
Almost all outcrops are phacoidal gneiss.
The pegmatite crops out in a gulch on the...stopes and small pits have been
developed.
The pegmatite body strikes N40°E with a 30° NW dip. It is zoned...controlled by fractures striking parallel to the
pegmatite body but dipping 50° NW.
The vugs are typically | 👁 Image
| | Book (edition) | | PARADISE I
Bancroft and Region
l
Old Mines
Quarries
Outcrops
Roadcuts
'·
Maps
• .•
·'
f
J
:
....
!...numerous abandoned mines, quanies, roadcuts and
outcrops that contain dozens of varieties of minerals....body of
granite and amphibolite.
Bancroft and District Mineral Collecting Guidebook, p. 12
AMER ICAN...once-successful mine is the pit.
Bancroft and District Mineral Collecting Guidebook, p. 34; Touring the...clear to smoky quartz, uraninite, uranothorite, zircon
Second largest uranium producer in the Bancroft | 👁 Image
| | Journal (article/letter/editorial) | | OCCURRENCE OF ALLANITE & ZIRCON
CRYSTALS FROM A SOUTHERN CALIFORNIA PEGMATITE
by Paul F. Patchick, Geologise...Watson, I chanced upon a dusty
specimen labled "zircon pegmatite" in
one of the laboratory study-collection...United States, if not in the entire world,
and zircon crystals of exceptional mineralogical interest... I set out to find the exact
location of the pegmatite and any pertinent details relating to the deposit...Neuerburg,
who was the original discoverer of the
zircon pegmatites, but he only offered a
vague description |
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