From spectrophotometry to multispectral imaging of ore minerals in visible and near infrared (VNIR) microscopy

Pirard, Eric and Bernhardt, Heinz Juergen and Catalina Hernández, Juan Carlos and Brea, Carolina and Segundo, Fernando and Castroviejo Bolibar, Ricardo (2008). From spectrophotometry to multispectral imaging of ore minerals in visible and near infrared (VNIR) microscopy. In: "9th International Congress for Applied Mineralogy (ICAM 2008)", 08/09/2008-10/09/2008, Brisbane, Australia. ISBN 978-1-920806-86-6. pp. 1-6.

Description

Title: From spectrophotometry to multispectral imaging of ore minerals in visible and near infrared (VNIR) microscopy
Author/s:
  • Pirard, Eric
  • Bernhardt, Heinz Juergen
  • Catalina Hernández, Juan Carlos
  • Brea, Carolina
  • Segundo, Fernando
  • Castroviejo Bolibar, Ricardo
Item Type: Presentation at Congress or Conference (Article)
Event Title: 9th International Congress for Applied Mineralogy (ICAM 2008)
Event Dates: 08/09/2008-10/09/2008
Event Location: Brisbane, Australia
Title of Book: Proceedings of th 9th International Congress for Applied Mineralogy
Date: 1 December 2008
ISBN: 978-1-920806-86-6
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería Geológica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Optical microscopy is a basic but still indispensable tool for examining mineral parageneses in ores. The design and concepts behind the reflected light ore microscope have obviously not been subject to spectacular technical evolutions in the last decades. However, digital imaging capabilities have opened new and stimulating perspectives for automated mineral identification. Recent works in developing multispectral image analysis (Pirard, 2004) have demonstrated its superior potential with respect to conventional colour imaging, but at the same time reconciliation with spectroscopic databases such as the Quantitative Data File III (Criddle and Stanley, 1993) still needs a more in-depth investigation as well as the possibility to extend both imaging and spectroscopy into the near infrared domain. In this paper, the authors present results gained from multispectral imaging in the range between 400 and 1000 nm together with spectrophotometric data from the QDFIII database, with an emphasis on minerals that cannot be easily distinguished in the visible spectrum.

More information

Item ID: 3694
DC Identifier: http://oa.upm.es/3694/
OAI Identifier: oai:oa.upm.es:3694
Official URL: http://www.ausimm.com.au/
Deposited by: Memoria Investigacion
Deposited on: 13 Jul 2010 08:42
Last Modified: 20 Apr 2016 13:11
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