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| | Journal (issue) | | of Emerald Mining in the Habachtal Deposit of Austria, Part II
Karl Schmetzer
The finale of a two-part...of articles on all aspects of the field.
Please see the Author Guidelines at gia.edu/gemsgemology or...items of enormous cultural and historical value are
See end of article for About the Authors and Acknowledgments...turelle – Règne Minéral (Gautier D’Agoty, 1781; see
also Wilson, 1995).
Soon thereafter, two publications...within its contact aureole
(Förster et al., 1999; see again figure 2, left). During
granite intrusion, | 👁 Image
| | Journal (issue) | | Hurlbut, C. S. (1969) Gem zoisite from Tanzania. Am. Mineral., 54, 702-9.
Schmetzer, K. (1978) Vanadium...27 ct and measuring 13.2 mm
long by 10.2 mm wide (see Figure 1). Though I cannot be certain of
my specimen's...shown on
the Highway Map 1:106.
•For the first, see J.Gemm., 1978, XVI, 3,194-5.—Ed.
ISSN: 0022-1252...synthetic gems having refractive indices
above 1.81 (see Table l f ). An ever increasing number of synthetic...painstaking process. To overcome this
*Patent pending.
+see page 535 below.
ISSN: 0022-1252 XVI (8)521 (1979) | 👁 Image
| | Journal (issue) | | ................ 805
by R. M. Hazen
The best grossular garnets from
the Jeffrey mine, Asbestos, Quebec................... 908
by A. Miglioli
COVER:
GROSSULAR crystals to
2.8 cm with pale green
diopside on...considered to
be the finest known Jeffrey
mine grossular specimen.
Marco Amabili collection;
James Elliott...Elliott (Fine Minerals
International) photo. See the
article beginning on page 817.
Columns
Notes from...to the collector community, so it was exciting to see them being brought back
into useful existence. But | 👁 Image
| | Journal (issue) | | from left:
Fluorite, 6.7 cm, from the Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher...from left:
Liddicoatite, 7 cm, from the Sahatany Valley, Madagascar. Collected by Federico Pezzotta; Antonio...Ben DeCamp photo.
Iolite, 4 cm, from the Entia Valley, Australia. Collected by George Stacy; Jeff Scovil...habit—the only such occurrence in the mine of which I am
aware. Altogether about 100 tons of wulfenite crystals...outside of the
pocket. Around noontime we were able to see into the pocket and
The Mineralogical Record, Eureka | 👁 Image
| | Journal (issue) | | of articles on all aspects of the field. Please see the suggestions fat
authors in the Spring 1993 issue...material may cause difficulties in identification (see, e.g., Hanni and Bosshart, 1993;
Hanni and Schmetzer...ruby crystals
occur in two habits: rhombohedral (see, e.g., figures 1-3) and tabular (figures 2 and 4)...rhombohedral and tabular crystals alike (again,
see figure 21.
As illustrated in figure 3, the rubies...planes (1010) and (0001), respectively (figure4; see, e.g., Schmetzer et al., 1994).
The rhombohedral | 👁 Image
| | Journal (issue) | | for
other synthetic red spinels. I n Fig. l a we see curved lines, which
indicate growth by the Verneuil... (On the
emerald occurrence in the H a b a c h valley.) Zeitschr.d. Deutsch.
Gesellschaft f. Edelsteinkunde...found around the tin-mining area
of the Bauchi district of Nigeria. Crystals are colourless or with a...P.B.
FARN (A. E.) : WEBSTER (R.)Massive pink grossular garnet.
Gemmologist, Vol. X X V , No. 300, pp...July, 1946.
Describes a pink and greyish massive grossular garnet probably
from the same locality as the | 👁 Image
| | Catalog/List | | principal reason for this
disposal is not financial 1 am very anxious to purchase from you, if you have
duplicate...5", £5.00
A/l 3.
ALMANDINE. Zillerthal, Tyrol, Austria. A silvery-green, lustrous surfaced, Mica-Schist...£8.75
A/l 5.
ALMANDINE (Garnet). Zillerthal, Austria. Lustrous brownish-red, sharp translucent 1.75"...>ALMANDINE/CHLORITIC-SCHIST. Zillerthal, Salzburg, Austria. Fine, large, showy cabinet
Schistose matrix...£45.00
55.
AUGITE/EPIDOTE/APATITE. Sulzbach, Austria. Excellent hand specimen consisting of a dark to | 👁 Image
| | Book (edition) | | these questions, you're a gem expert! (If you don't, see
the back flap for answers.) These fascinating
facts...Cape ruby
Ceruline
Black coral
Dioptase
Green grossular garnet
Natural purple spine!
Green microcline...different angles at which these axes
intersect (see p. 16 and 17).
Isometric system (regular and cubic)...Demantoid
Diamond
Fluorite
Gahnite
Garnet
Gold
Grossular
Hauynite
Hessonite
lapis Lazuli
leucite
Perictase...Tektite
Table of Chemical Elements
Symbol
Ac
Ag
Al
Am
Ar
As
At
Au
B
Ba
Be
Bi
Bk
Br
C
Ca
Cd
Ce
Cf
Cl
Cm | 👁 Image
| | Book (volume) | | a few such specimens have been found
after 1960 (see the Amity-Edenville entry for Edenite and Spine!)...Mount Malosa, Chilwa alkaline province, Zomba district.
"Illite" is the name of a series of incompletely...to 2 cm
which are pseudomorphs after bastnasite--see photo in Guastoni,
Pezzotta and Zorzi (2008).
ILMENITE...euhedral, pale tan to white rnicrocline
crystals-see photos in Dupuis and David (2013).
ffighway 5 extension...molybdenite specimens showing
crystals to 6 cm (see this entry for Molybdenite), and in a second
roadcut | 👁 Image
| | Book (edition) | | Arizona. SA. The separate fluid remnants are easy to see in darkf1eld 64x Pinpoint fiberoptic illumination...with those of the magenta sapphire from the Umba Valley. Tanzania. Transmitted illumination. 65x. Bottom...hallmark of this interesting garnet from the Umba Valley in Tanzania. Darkfield. 13x. 59 More or less...valuable data on the conditions of diamond formation (see Meyer. this volume). but there have been no verified...Cave-in-Rock. southern Illinois fluorite-zinc district. Photomicograph E. Roedder. US Geol. Survey. Reston | 👁 Image
|
| | Arizona. SA. The separate fluid remnants are easy to see in darkf1eld 64x Pinpoint fiberoptic illumination...with those of the magenta sapphire from the Umba Valley. Tanzania. Transmitted illumination. 65x. Bottom...hallmark of this interesting garnet from the Umba Valley in Tanzania. Darkfield. 13x. 59 More or less...valuable data on the conditions of diamond formation (see Meyer. this volume). but there have been no verified...Cave-in-Rock. southern Illinois fluorite-zinc district. Photomicograph E. Roedder. US Geol. Survey. Reston | 👁 Image
| | Book | | Lazuli (see No. 96)
Top right: Orpiment with Realgar (see No. 288)
Bottom: Garnets in Mica Schist (see No... Table of Chemical Elements
Symbol Name
Ac
Ag
A1
Am
Ar
As
At
Au
B
Ba
Be
Bi
Bk
Br
C
Ca
Cd
Ce
Cf
Cl
Cm...important for identification. Physical properties: see above. Occurs in
veins, geodes and amygdaloidal infillings...crystals of
rutile (p. 170). Physical properties: see above. Found in Scotland,
Minas Gerais (Brazil)....be seen to be cut through by white
quartz veins {see p. 108).
26
Minerals
Feldspars and Feldspathoids | 👁 Image
| | Book (edition) | | obtained. Often. with inclusions which are difficult to see. it is necessary first to render them visible by...ephemeral day-fly on the scale of earth history-does not see these revolutions and can at most reconstruct them... in the emerald.Emeraldsfrom the Urals.the Habach valley, Sandawana and from the Transvaaloften containan...and thorium contained in the zircon (for details. see under Epigenetic Inclusions). Glass in the form of...inc.:l..!s:;:., in an emerald from the Habac valley. Austria. TL 40Y The bla:k sp::;'.; a~:; = e,;i,: er':::p | 👁 Image
| | Book (edition) | | away beforc wc could finish this collaboration. I am pleased
to have been able to finish lhis Glossary...Pierre-Jacques Chiappero (France). G. Daxner (Austria). M. Dcliens (Belgium).
Giancarlo Delia Ventura... Keams (USA). Elisabeth Kirchner
(Austria), Uwe Kolitsch (Austria). Werner Krause (Gennany). Andre Lalonde...Lalonde (Canada),
P. Leblhuber (Austria), Andrew Locock (Canada). J.A. Mandarino (deceased) (Canada),...Filippo Olmi (deccased) (ltaly). Werner H.
Paar (Austria). Gian Carlo Parodi (France). Marco Pa ero (ltaly) | 👁 Image
| | Book (edition) | | revision of
some of the optical data in the tables I am much indebted to Mr. B. W. Anderson and Mr. C. J...of salt and
a crystal of sugar we should at once see the difference
between them. The idea that jewellers...light.
Viewed
and a diamond is yellow. The colour we see really
depends on the kind of light which is iliummating...octaves we cannot see.
person endowed with supernatural limits of vision might see
some really remarkable...why on a foggy day the
sun is ruby-red; or why we see emerald-green and
other gorgeous colours at sunset | 👁 Image
| | Book (edition) | | hein. a
at
ad
its
Ne
“wines
gut we
ae
VE
ee
am
ite@
ce
Y ear ieaad Wi
56
ett
os
jan
OTS
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————
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ks
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Mt:...Mineral Names,
1892-1978, by Embrey and Fuller (see below) for the historical usage and development of...dispersed extraneous colorants, or
lattice defects. (See Color of Minerals by George Rapp, Jr., Houghton Mifflin...beams which travel with unequal
velocities.
bonding
See
covalent
bond,
ionic
bond,
metallic
bond.
Bravais | 👁 Image
| | Book | | nobly with being a gem widow. A cknowledgements I am very grateful to the Institute of Geological Sciences...lass or plast ic. 31 METAMORPHIC olivine, grossular, almandine and andradite garnets, corundum, beryl...peridot have been mined to the east of the Nile Valley for 4 000 years or m ore, but the emerald mines...Pegmatites produce interesting gems in the San Diego district of California and in Maine and Connecticut. New...it is reflected or absorbed, otherwise we should see no colour or texture. The importance of a good, clean | 👁 Image
| | Book (edition) | | Mineral Names,
1892-1978, by Embrey and Fuller (see below) for the historical usage and development of...dispersed extraneous colorants, or
lattice defects. (See Colorof Minerals by George Rapp, Jr., Houghton Mifflin...beams which travel with unequal
velocities.
bonding See covalent bond, ionic bond, metallic
bond.
Bravais...only 14 possible crystal lattices; see crystal
lattice.
cell See unit cell.
chatoyancy An optical property...particles; (3) a mineral group of
phyllosilicates.
class See crystal class.
The property of a mineral whereby | 👁 Image
| | Book | | bliss shape
themselves before our inner eyes? We see indescribable landscapes of deep surging blue in...gravels
are found both in present-day stream beds and valley bottoms as well as in the older river
terraces...ofthe Orange River,
by a Griqua shepherd boy. The district in question was soon almost overflowing with
adventurers...diamonds of gem quality.
30
4
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Nes
FE
+
He
rs
A
See Sn ytd
we 4 |
‘
TEN
—
{
x
|
JA
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#
W
N...Anakie in
Queensland,
Australia, in the Umba
valley in Tanzania,
and in Rock
Creek and the
Missouri | 👁 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...colored gems
least become
D.
labor.
time,
at
am-
by other par-
Egyptian emeralds
the
or
the | 👁 Image
| | Journal (issue) | | of articles on all aspects of the field. Please see the suggestions for
authors in the Spring 1993 issuc...political issue.
W. WM. HANNEMAN, Ph.D.
Castro Valley, California
GEMS & GEMOLOGY
Summer 1993
By...overlap those of natural gem spinels of similar
color (see Bank and Henn, 1990; Brown et al., 1990;
Koivula...difficult to grow synthetic red spinel by
this method [see Schiffmann, 1972; Brown et al.,
1991), because it...socalled "cross-hatch effect" or "tabby extinction1'see Webster, 1983; Hurlbut and Kammerling,
1991). Consequently | 👁 Image
| | Book | | example of the gems of the Chanthabury mining district in Eastern Thailand. 8 SSS IS S ••••SS•.•••...of the years 1985 to 2016 were also essential. 1 am - and have always been - a corundum man. This is...folks! Celebrities For my book, it was important to see, abo 'e all. the most famous star gems with my ou:n...transmiltrd lif}ht. And thic,at the>same·time·.I am very proud to present to you more than a thousand...Emotions. Very Last The Top Photographer Dr. X. l am glad to show some other pictures that are not directly | 👁 Image
| | Journal (issue) | | Italian marble.
For information about working tigereye
see the article on page 16.
EDITOR
JACK R. COX
HOW-TO-DO...ends of each side
piece are cut at 45 ° fffigles (see Fig. 1). A
rabbet, ½ inch wide by ¾ inch deep is...easily
between the cabinet front and the molding
(see Fig. 5).
~
7
,_
.,
Suggested Retail
$179.95
I...and complete assembly with small finishing nails (see Fig. 3).
Fig. 5. The plexiglas slides down between...cover picture and the photos on this
page, you can see some of the several
varieties of tigereye and similar | 👁 Image
| | Journal (issue) | | the lap of choice for cutFirst, let me state that I am limiting ting is the 1500. Wrth the small stones...plastic bag she was
carrying and I peeked inside to see
N
that it was full of reddish-brown,
roughly rounded...alluvium, and deposited along the drainages and in the valley bottoms. With a
specific gravity of about 4.0,...valuable.•
Rose Lightening and her pipeetone carvings. See her at Enid, Oklahoma show May
17and18.
By Frances...operators of Herkimer • diais often difficult to see with the unaid- mond" collecting sites say the most |
|
