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10/2009
It is well known that an exposure to crystalline silica gives rise to silicosis and silico-tuberculosis (TB). In the agate industry of Khambhat (Gujarat) not... 
silicosis | cost-benefit analysis | Agate industry
Web Resource
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, ISSN 1386-1425, 10/2011, Volume 81, Issue 1, pp. 552 - 559
Chalcedony is a porous spatial arrangement of hydroxylated nanometre sized a-quartz (SiO2) crystallites. Due to micro-structural transformations upon heat... 
Surface silanole SiOH | Flint | SPECTROSCOPY | MINERALS | Length-fast chalcedony | SPECIATION | AGATE | Porosity | SILICA | MICROCRYSTALLINE | Microstructure | QUARTZ
Journal Article
Journal of Raman Spectroscopy, ISSN 0377-0486, 09/2012, Volume 43, Issue 9, pp. 1275 - 1280
A commonly marketed handheld Raman spectrometer showed excellent possibilities in being used as a key instrument for unambiguous identification of gemstones... 
Gemstones | Raman spectrometry | Handheld instruments | Noble metals | XRF | NONDESTRUCTIVE ANALYSIS | ON-SITE | SPECTROSCOPY | GEMS | gemstones | noble metals | IDENTIFICATION | handheld instruments | Precious metals | Jewelry industry | Agates | Analysis | Fluorescence | X-ray spectroscopy | Amethysts | Raman spectroscopy | Silver alloys | X-ray fluorescence | Fingerprints | Restoration | Garnets | Gems | Tools | Silver base alloys
Journal Article
European Journal of Mineralogy, ISSN 0935-1221, 2/2018, Volume 30, Issue 1, pp. 97 - 106
Agates are unable to be reproduced in a laboratory environment, and hence the mechanism of their formation remains unknown. Present hypotheses regarding... 
silica sol–gel precursor | petrogenesis | agate | morphology | band formation | Agate | Band formation | Silica sol-gel precursor | Morphology | Petrogenesis | CRYSTALLIZATION | MECHANISM | CATHODOLUMINESCENCE | BASALTS | TRACE-ELEMENT | FIBERS | ORIGIN | silica sol-gel precursor | CHALCEDONY | GEOCHEMISTRY | QUARTZ | MINERALOGY
Journal Article
Journal of Archaeological Science: Reports, ISSN 2352-409X, 04/2016, Volume 6, pp. 321 - 331
Agate and carnelian beads, imported from South Asia, were widely exchanged in Southeast Asia during the Iron Age period (500 BCE–500 CE). Recent studies have... 
Provenience analysis | LA-ICP-MS | Southeast Asia | Beads | Agate/Carnelian | South Asia
Journal Article
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, ISSN 1314-2704, 2018, Volume 18, Issue 1, pp. 441 - 447
New results of the main bentonite localities mineralogical research in the Most Basin area are the main topic of this paper. The main attention is devoted to... 
Bentonite | Rokle deposit | Petrified trees | Agates | Mineralogy | Quarries | Trees | Geology | Laboratories | Raw materials | Minerals | Alliances | Research | Sediments | State budgets | Coal | Cities
Conference Proceeding
Mineralogical Magazine, ISSN 0026-461X, 10/2017, Volume 81, Issue 5, pp. 1223 - 1244
Dehydration of silanol and molecular water in 60 agates from 12 hosts with ages between 23 to 2717 Ma has been investigated using desiccators and... 
genesis | relative humidity | mogánite | silanol | agate | chalcedony | water | Relative humidity | Water | Silanol | Moganite | Agate | Genesis | Chalcedony | GRANDE-DO-SUL | NEW-ZEALAND | CATHODOLUMINESCENCE | moganite | X-RAY-DIFFRACTION | LOW-TEMPERATURES | MICROCRYSTALLINE QUARTZ | SILICA SINTERS | SPECTRA | MINERALOGY
Journal Article
Mineralogical Magazine, ISSN 0026-461X, 08/2015, Volume 79, Issue 4, pp. 985 - 996
A systematic investigation of agates from different occurrences in Europe, Northern and Southern America reveals that macrocrystalline quartz and chalcedony... 
luminescence | uranyl | quartz | uranium | agate | green photoluminescence | chalcedony | CATHODOLUMINESCENCE | TRACE-ELEMENTS | ORIGIN | FLUORESCENCE | RESONANCE | ICP-MS | SILICA | GEOCHEMISTRY | MINERALOGY
Journal Article
1986, New studies in archaeology, ISBN 0521252660, xiii, 256
Book
Renewable Energy, ISSN 0960-1481, 12/2017, Volume 114, Issue Part A, pp. 204 - 214
Previous tidal energy studies in Puget Sound have focused on major deep channels such as Admiralty Inlet that have a larger power potential. This paper focuses... 
Agate Pass | In-stream tidal energy | Rich Passage | Tidal circulation | Puget Sound | Modeling | GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY | MINAS PASSAGE | USA | ENERGY & FUELS | WASHINGTON | HYDRODYNAMICS | FLOW | ESTUARIES | TRANSPORT TIME SCALES | FUNDY | COASTAL OCEAN MODEL | STREAM TURBINES | Models | Ocean energy resources | Analysis | Turbines | TIDAL AND WAVE POWER
Journal Article
2018, ISBN 9783038973485
The present book reports recent contributions from research in the field of quartz and other silica minerals. The various forms of silica (SiO2) represent... 
Diatomite | Epithermal gold deposits | Thermogravimetry | Agate | Opal | Infrared Spectroscopy | Quartz | Cathodoluminescence | Amethyst | Extraterrestrial silica | SiO2 deposits | Silicified wood | Processing of quartz raw materials | Hydrothermal vein quartz | Mass Spectrometry | Trace elements
eBook
Asian Perspectives, ISSN 0066-8435, 2019, Volume 58, Issue 1, pp. 180 - 201
Analyses of a sample of 68 carnelian and agate beads from Korea's late Proto-Three Kingdoms and Three Kingdoms period (c.E. 100-668) provide evidence for... 
Agate beads | Beads | Korea | Three Kingdoms period | trade | carnelian | stone beads | drilling | South Asia | ARCHAEOLOGY | Archaeology | Book publishing | International economic relations | Imports | Analysis
Journal Article
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, ISSN 1386-1425, 05/2011, Volume 78, Issue 5, pp. 1476 - 1481
Chalcedony consists of hydroxylated 50-100 nanometre measuring α-quartz (SiO ) crystallites that lose their surface silanole groups (Si-OH) upon heating... 
555 cm | Flint | Surface silanole | SiOH | FT-IR | band | Chalcedony | 555 cm(-1) band | SPECTROSCOPY | AGATE | QUARTZ | WATER
Journal Article
Journal of Occupational Health, ISSN 1341-9145, 2013, Volume 55, Issue 4, pp. 312 - 317
[Objectives]: High incidences of silicosis are continuing to be reported among the agate workers of small-scale household agate processing units in the... 
Journal Article
Journal of Archaeological Science: Reports, ISSN 2352-409X, 04/2016, Volume 6, pp. 733 - 756
Dolphins are widespread in warm oceanic and coastal waters. They habitually frequent islands. In California, Chile, and other localities, prehistoric peoples... 
Pearl islands | Panama | Seafaring | Agate | Preceramic | Maize | Mazama | Periotic | Dolphins | Taphonomy
Journal Article
Chinese Journal of Environmental Engineering, ISSN 1673-9108, 06/2015, Volume 9, Issue 6, pp. 2619 - 2624
Journal Article
Palaeogeography, Palaeoclimatology, Palaeoecology, ISSN 0031-0182, 2010, Volume 292, Issue 1, pp. 127 - 143
Petrographic imaging, in combination with qualitative and quantitative instrumental analyses of mineral mass, allow us to obtain material signatures of... 
Environment | Provenance analysis | Moganite | Fossil wood | Quartz | Cathodoluminescence | BOHEMIAN MASSIF | FOSSIL FOREST | WOOD | FOREST-NATIONAL-PARK | SPECTROSCOPIC INVESTIGATIONS | GEOGRAPHY, PHYSICAL | GEOSCIENCES, MULTIDISCIPLINARY | PALEONTOLOGY | PETRIFIED-FOREST | GROWTH | AGATE | CENTRAL TRANSANTARCTIC MOUNTAINS
Journal Article
ANDEAN GEOLOGY, ISSN 0718-7106, 09/2015, Volume 42, Issue 3, pp. 386 - 396
In the present study a first found of agates in Chile is reported from the Cordon de Lila region in northern Chile. The agates occur as veins and lenses in... 
GEOLOGY | Mineralogy | Geochemistry | Agate | CATHODOLUMINESCENCE | Cordon de Lila | Volcanic rocks
Journal Article
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