2008
DOI: 10.5741/gems.44.1.4
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Copper-bearing (Paraíba-type) Tourmaline from Mozambique

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Cited by 25 publications
(23 citation statements)
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“…The rough surface of the pebbles made it impossible to look for gas bubbles or other indications of a glass in their interior. However, hydrostatic SG measurements yielded values of 2.49-2.51, which are within the range of glass and much lower than typical values for this tourmaline (3.01-3.09; Laurs et al, 2008a). Raman analysis gave indistinct patterns that are typical of glass, confirming our suspicion that these pebbles were glass imitations of tourmaline.…”
Section: Glass Imitations Of Cu-bearing Mozambique Tourmalinesupporting
confidence: 60%
See 1 more Smart Citation
“…The rough surface of the pebbles made it impossible to look for gas bubbles or other indications of a glass in their interior. However, hydrostatic SG measurements yielded values of 2.49-2.51, which are within the range of glass and much lower than typical values for this tourmaline (3.01-3.09; Laurs et al, 2008a). Raman analysis gave indistinct patterns that are typical of glass, confirming our suspicion that these pebbles were glass imitations of tourmaline.…”
Section: Glass Imitations Of Cu-bearing Mozambique Tourmalinesupporting
confidence: 60%
“…Alluvial deposits in the Mavuco area of northeastern Mozambique are famous for producing copper-bearing tourmaline in a variety of colours (e.g. Laurs et al, 2008a). At the 2015 Tucson gem shows, Michael Puerta (Intimate Gems, Glen Cove, New York, USA) showed one of these authors (BML) three pebbles that he obtained in Mavuco in June 2014.…”
Section: Glass Imitations Of Cu-bearing Mozambique Tourmalinementioning
confidence: 99%
“…The decade also saw the rise in popularity of garnets such as spessartine (e.g., Laurs, 2002b), demantoid (Laurs 2002a;Eddins 2010), and tsavorite (Mayerson and Laurs, 2004), as well as cuprian tourmaline (from Africa), thanks to the discovery of new sources (see, e.g., Laurs et al, 2008).…”
Section: New Deposits and New Operations Madagascarmentioning
confidence: 99%
“…Atualmente esta é a principal ocorrência mundial devido à produção constante de gemas entre 20 -60ct, podendo atingir até 88ct (LAURS et al 2008).…”
Section: -Introduçãounclassified