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    Academic Journals

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• Select The history and apparatus of blowpipe analysis

  1

  The history and apparatus of blowpipe analysis

  Author:Ulrich BurchardFrom:The Mineralogical Record (Vol. 25, Issue 4) Peer-Reviewed

  July-August 199416,627 words Article The blowpipe, which was used by Swedes in the 18th century to analyze minerals, has helped mineralogists discover the composition of various minerals. The discovery of approximately 15 types of minerals in Europe and...
• Select The sclerometer and the determination of the hardness of minerals

  2

  The sclerometer and the determination of the hardness of minerals

  Author:Ulrich BurchardFrom:The Mineralogical Record (Vol. 35, Issue 2) Peer-Reviewed

  March-April 20044,649 words Article After nearly 200 years, Mohs' ten-step hardness scale is still valid as a quick and approximate analytical method for mineral identification. The sclerometer was invented in the nineteenth century to give a more...
• Select Historical instruments for measuring temperature and pressure effects on crystals

  3

  Historical instruments for measuring temperature and pressure effects on crystals

  Authors:Ulrich Burchard and Olaf MedenbachFrom:The Mineralogical Record (Vol. 43, Issue 1) Peer-Reviewed

  January-February 2012 Article

   Citation Only
• Select The refractometer

  4

  The refractometer

  Authors:Ulrich Burchard and Olaf MedenbachFrom:The Mineralogical Record (Vol. 40, Issue 2) Peer-Reviewed

  March-April 200911,778 words Article 1320LThe index of refraction is a fundamental property of a substance, and its determination may provide valuable diagnostic information about minerals and crystals. Over a period of four centuries, widely varying devices...
• Select History of the development of the crystallographic goniometer

  5

  History of the development of the crystallographic goniometer

  Author:Ulrich BurchardFrom:The Mineralogical Record (Vol. 29, Issue 6) Peer-Reviewed

  November-December 199830,099 words Article Goniometers are optical scientific instruments used to measure the angles between crystal faces. These instruments developed at the same time that crystallography was becoming a classical mineralogical science from the...