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| Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | sub-types hosted in: (IA) Mafic-ultramafic rocks (Brazil, Zambia,
Russia, and others); (IB) Sedimentary...sub-types hosted in: (IIA)
Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale...ct. Insufu rough emerald extracted from the Kagem mine
in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”)
was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen
weighed 341 kg with 1.7 million | 👁 Image
| | Report (issue) | | and trapiche emerald
Rupert Hochleitner
Brazil: Minas Gerais, Bahia, Ceara, Goias and
Tocantins . . ...Asia: Pakistan, Afghanistan and India .......6 0
Old Mine Emeralds . . . . . . . . . . . . . . . . . . . ...Maharajahs and
Maharanis held large emeralds (see "Old Mine
Emeralds" page 62).
The Color of Islam
Emerald...quality. It was the gift of Emperor
Dom Pedro I of Brazil to the 6 th Duke of Devon-
shire. Also housed...some of the most productive emerald localities
in Brazil, for example, more than 77 percent of
the emerald | 👁 Image
| | Journal (issue) | | Pearl Testing
36 Emeralds from South America – Brazil and Colombia
48 Clinohumite – The Mountain Fire...rise of new economies such as China,
India, and Brazil.
The challenges have been numerous as these
new...every ICA member, I
would like to thank the IBGM in Brazil along with every company, individual,
and government...Opening a
Tsavorite Mine
T
anzaniteOne Limited is working
towards opening a tsavorite mine
not far from its...Tanzania, about 20
kilometers from its tanzanite mine.
The project has a total indicated resource of 1 | 👁 Image
| | Journal (issue) | | INSTITUTE OF AMERICA
Emeralds from Northeastern Brazil
Diamantine: Coated Cubic Zirconia
Precision Measurement...the Fazenda Bonfim Region, Rio Grande do Norte, Brazil
J. C. (Hanco) Zwaan, Dorrit E. Jacob, Tobias Häger...Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically
display a saturated...from Pakistan • Cat’s-eye emerald from Belmont,
Brazil • Meteorite watches • Purple common opal from Mexico...of the publisher.
About the Cover
For decades, Brazil has been one of the world’s major sources of fine | 👁 Image
| | Journal (issue) | | Decade of Change
A New Era for the Historic Coscuez Mine
Esmeraldas Santa Rosa: Our Wealth is Green
Rediscovery...More
Exquisite Emeralds
Magnificent Old Mine Emeralds
143
Mine Visit
A Visit to Colombia’s “Green” Emerald...Origins and Appellation
President
Clement Sabbagh, Brazil
Vice Presidents
Damien Cody, Australia
Nirmal Kumar...Kumar Bardiya, India
Treasurer
Marcelo Ribeiro, Brazil
Secretaries
Bruce Bridges, USA
Santpal Sinchawla...acquiring the majority stake in
the iconic Coscuez mine in Colombia.
The 2015 Symposium focused on the government’s | 👁 Image
| | Book | | {STAPLES et ai., 1973). 8. Ocorrência(s): MINAS GERAIS PROVÍNCIATOCANTINS ➔ Mineralizações na pedreira...(HORBACH; MARIMON, 1988; FIGUEIREDO,1992}. MINAS GERAIS PROVÍNCIASÃO FRANCISCO ➔ Mina de ouro do Morro...Paramirim, em Paramirim BAHIA/ESPÍRITO SANTO/MINAS GERAIS PROVÍNCIA MANTIQUEIRA ➔ Depósitos de minerais... em Porto Murtinho (CABRERA et ai., 2010). MINAS GERAIS PROVÍNCIA SÃO FRANCISCO l'J ➔ Mina de ferro...MORTEANI et ai., 2000; GROAT et ai., 2008). ➔ Mina Piteiras, em ltabira (RONDEAU etal., 2003; GROATetal., | 👁 Image
| | Journal (issue) | | from Brazil shows chatoyancy caused by flat hollow
channels. Four-rayed star aquamarine from Brazil has...the c-axis. A tourmaline-quartz combination
from Brazil has an iridescent chatoyancy Grey orthoclase moonstone...cat's-eye from Brazil
A
very unusual example of a cat's-eye
was purchased in Brazil by the
author in...measuring
Figure 1: Chatoyant pale blue topaz from Brazil
weighing 152.15 ct. Photo by J. Hyrsl.
32.94 x...described two topaz cat'seyes, one blue of 7.98 ct from Brazil and
another colourless of 12.20 ct from Sri Lanka | 👁 Image
| | Journal (issue) | | the development of Australia’s first major diamond mine,
the world’s largest source of diamonds by volume...Benitoite mine
sold • Emeralds from Laghman, Afghanistan • Emeralds from Piteiras,
Brazil • Educational...“close-up” map
shows the location of the three main mine sites discussed in this article: Kormos, Oxbow,...1983, when mining started at
the open-pit Kormos mine, high-quality material
has been offered regularly...the only major producer. Today, work at the
Kormos mine is temporarily suspended, and production comes from | 👁 Image
| | Journal (issue) | | ARTICLES
260
An Update on “Paraíba” Tourmaline from Brazil
James E. Shigley, Brian C. Cook, Brendan M. Laurs...on amethyst, citrine, and ametrine from the Anahí
mine, Bolivia • “Copal” resin from Madagascar • Iolite...corundum from
Wyoming • Green kyanite from Bahia, Brazil • “Ruby Rock” cabochons •
Tourmaline from Warner...More recently, Brendan
has visited Madagascar and Brazil to obtain first-hand
knowledge of important gem...of gemological topics: “Paraíba” tourmaline from
Brazil, spessartine garnet from California, Malaya garnet | 👁 Image
| | Book | | BARTORELLI
::• . . ..
MINERALS
& PRECIOUS
STONES
OF BRAZIL
Sponsored by:
VALE
MINISTER.IO
DA CULTURA
©...feldspar, Lin6polis,
Divino das Laranjeiras, Minas Gerais.
Collection of and photograph
by Julio Landmann...Lavra do Sapo,
Ferruginha, Conselheiro Pena,
Minas Gerais. Collection of
Alvaro Lucio. Photograph
taken...Brasileira do Livro, SP, Brazil)
Aquamarine (113 mm high), Medina,
Minas Gerais. Collection of S. & C....Cornejo, Carlos
.Minerals & precious stones of Brazil.
Carlos Cornejo, Andrea Bartorelli.
[franslation: | 👁 Image
| | Book | | of the Stone in Myth and in Rock
9
3
From Mine to “Mine”: The Emerald Business
21
4
Emeralds in World...could identify
the country and sometimes the actual mine a particular stone came from.
However, vaporizing...of some ocean. The glorious emeralds of the Muzo
mine of Colombia are embedded in calcite veins found...been described for precious gems.
r
From Mine to “Mine”: The Emerald
Business
The rarity of emeralds...percent of this in Colombia, followed by Zambia, then Brazil, Pakistan,
Zimbabwe; much smaller amounts are found | 👁 Image
| | Book | | Granitic Pegmatite,
Parelhas, Rio Grande do Norte, Brazil
Reprinted from: Minerals 2019, 9, 233, doi:10.3390/min9040233...Province (BPP) from
Rio Grande do Norte in Northeast Brazil. The Boqueirao granitic pegmatite is classified...sources (i.e., Afghanistan
(Panjsher Valley), Brazil (Itabira), Colombia (Coscuez), Ethiopia (Shakisso),...Granitic Pegmatite, Parelhas, Rio Grande do
Norte, Brazil. Minerals 2019, 9, 233. [CrossRef]
Huong, L.T.-T...Granitic Pegmatite, Parelhas,
Rio Grande do Norte, Brazil
Sabina Strmić Palinkaš 1, *, Ladislav Palinkaš | 👁 Image
| | Journal (issue) | | News International
• Australia’s Ellendale diamond mine opens • Aquamarine and spessartine
from Tanzania...• New morganite mine in Madagascar • Namibian gem localities • New opals from Brazil
• Bicolored spessartine...spessartine from Brazil • Pink/yellow spodumene from Afghanistan
• Glass imitations encountered in Namibia...diamonds shown here are from Canada’s Ekati
Diamond Mine™, which started production in 1998. The necklace...and the staff of Amsterdam Sauer
Rio de Janeiro, Brazil
RTL TRIBUTE
GEMS & GEMOLOGY
FALL 2002
207
| 👁 Image
| | Book (edition) | | Salinas, Peru, H
Variscite, xx 5 mm, Iturnbiara, Brazil, H
Rhodocbrosite, polished, 50 mm, Capillitas,... China, H
Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H
Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Brazilianite, 35 mm, Linopolis, Brazil, H
Page 13: Gold, 35 mm.Eagle's est Mine, California, G
Publi!>hed...Rice, Dolores co.,
both Colorado, at the Questa mine, Taos co., New
1994.
Abernathyite
K2[(UOJ 2l(AsO_J2]•6HzO...Harding
Co .. South Dakota. and at the Fuemrole No2 mine,
Emery co .. Utah. Also at Menzenschwand Scbwarzwald | 👁 Image
| | Journal (issue) | |
386 Gem Notes
Large kunzite from Brazil|
Marble-hosted ruby mine,
Mogok, Myanmar|Secondary
gem deposit...from Idaho|Dumortierite
inclusions in quartz from
Brazil|Quartz sphere with
large inclusion|Zawadi
sapphires|Tourmaline...Kunzite Gem Crystal from Brazil
The granitic pegmatites of Minas Gerais, Brazil,
are well known for producing...was mined in 1998 from the Urucum
pegmatite in Brazil. Photo by B. M. Laurs.
(1962, p. 287) also reported...“flawless gems
exceeding 300 carats have been cut in Brazil,
and the author has cut a number of much larger | 👁 Image
| | Journal (issue) | | sunstone
from India • Staurolite in kyanite from Brazil • Obsidian with spessartine inclusions • Fluorite...were occasional finds over the
centuries in India, Brazil (Cassedanne, 1989), and
perhaps elsewhere, the...been cut from a large crystal found at the Finsch
mine in South Africa.
Figure 2. The Tiffany yellow diamond...of
rough recovered from a claim on the Kimberley
mine was later fashioned into the Tiffany diamond
(again...(again, see figure 2). In 1964, the Dutoitspan mine
yielded a spectacular 253.70 ct transparent yellow | 👁 Image
| | Journal (issue) | | frequently in quartzes, i.e. the Dauphiné
and the Brazil laws (see e.g. Frondel,
1962), cannot be responsible...Crystallized and
massive rose quartz deposits in Brazil. Journal of
Gemmology, 22 (5), 273-86
Frondel,...intergrown with the
matrix chrysotile and demantoid are
chromite, and minor quartz and augitepyroxene. Our data...described from a
pegmatite at Limoeiro, Minas Gérais, Brazil, and crystals
of montebrasite of exceptional...minerals and with
amblygonite is discussed.
M.O'D.
Piteiras, Brasilien: erfolgreiche Smaragdsuche
mit modernen | 👁 Image
| | Journal (issue) | | rhodochrosite, 2.59 ct Paraíba tourmaline from Brazil, 8.51 ct Sri Lankan spinel, 13.00 ct Madagascar...“padparadscha” sapphire, 2.12 ct Paraíba tourmaline from Brazil. Photo of stones © GIA and
Harold & Erica Van Pelt;...Shown here is the recovery plant at the Jwaneng mine
in Botswana. Photo courtesy of Debswana.
another...a poster on golden rutilated
quartz from Bahia, Brazil.
Near right: Designer
Michael Bondanza discusses...2020
Yasukazu Suwa
I
t took about 2,700 years to mine and fashion an estimated 0.8 tons of diamonds before | 👁 Image
| | Report (issue) | | DEPOSITS AND OCCURRENCES Afghanistan Australia Austria Brazil Bulgaria Canada China Colombia Egypt India Kazakhstan...thousand years until the discovery of diamonds in Brazil ( 1725). Diamonds from the alluvial Kalimantan...make up about 5% of the production at the Helam Mine (Swartruggens dyke swarm, South Africa; Mc Kenna...Ilb diamonds are mainly derived from the Cullinan Mine ("Premier") in South Africa and a likely lithospheric...association with the general diamond production at that mine. Diamonds containing inclusion parageneses indicative | 👁 Image
| | Journal (issue) | | North Carolina • Emerald-in-matrix from Bahia, Brazil • 5th century garnet
jewelry from Romania • Natural...reports on copperbearing tourmalines from Paraíba, Brazil; rubies and sapphires from Vietnam; and rubies...Tajikistan, Kenya, Madagascar,
Mozambique, Tanzania, and Brazil.
The scapolite group consists of two main end
members:...
Madagascar a
Tanzaniaa
Tanzaniab
Myanmar a,b
Brazil (Espirito
Santo)a
Switzerland (Lake
Tremorgio)a...2009
Spring 2006
“Paraíba”-type Tourmaline from Brazil, Nigeria,
and Mozambique: Chemical Fingerprinting | 👁 Image
| | Book (volume) | | Springfield show ( 1995: 582).
Madawaska [Faraday] mine near Bow Lake, Hastings
County. Some of the world's...property of, the old Madawaska uranium mine
(called the Faraday mine before 1964). The mineral assemblage...Trimble and Cowgill, 1977).
LATINAMERICA
BRAZIL
Jacupiranga mine, Sao Paulo. Among the crystallized minerals...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous...ilmenite crystals as described here for the Dodo mine. In
general, ilmenite crystals from the Subpolar | 👁 Image
| | Journal (volume) | | .........................319
EM61
Mineralogy of mine wastes and contaminated soil......................and phases
composition of flotation waste of Bor mine
(Serbia)
Cocić, M.1, Matović, B.2 & Logar, M.3*...from Myanmar
Emeralds from the Piteiras mine, Minas Gerais
State, Brazil: genetic implications from fluid...Vandoeuvre-le`sNancy, France
The Piteiras mine in Itabira is located in the Minas Gerais State,
Brazil and produces gem...Temperature (oC)
Koffiefontein mine
1087 (±15)
5.2 (±0.1)
Finsch mine
1041 (±5)
5.0 (±0.1)
The structural | 👁 Image
| | Journal (issue) | | of
their minor (<1%) mineral impurities, e.g.
chromite, spinel, garnet, sulphide, chlorite
and chromium-mica...4.32
0.051
0.147
0.711785 ± 0.000042
Hualien mine
0.28
3.57
0.078
0.227
0.712853 ± 0.000040
...TH
nephrite
Siberia, Russia
VR
nephrite
Vitim mine
0.50
4.11
0.122
0.352
0.711390 ± 0.000031
...complex
consists mainly of serpentinized peridotite,
chromite-bearing peridotite, metagabbro
and metabasalt...The jadeitite
veins, e.g. the one at the Maw Sit mine
near the north end of the Jade Tract, are
almost |
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