<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>E. S. McGee</dc:creator>
  <dc:date>1987</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;The Shelburne Marble of Vermont has been used extensively in buildings and &lt;/span&gt;&lt;span&gt;monuments and for this reason has been selected as a test stone for the National &lt;/span&gt;&lt;span&gt;Acid Precipitation Assessment Program (NAPAP) stone exposure studies. Miner&lt;/span&gt;&lt;span&gt;alogical characterization of fresh Shelburne Marble provides a basis for &lt;/span&gt;&lt;span&gt;recognizing mineralogical changes that may occur in samples when they are &lt;/span&gt;&lt;span&gt;weathered. &lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;The Royal variety of Shelburne Marble is a white marble with gray streaks &lt;/span&gt;&lt;span&gt;of inclusions. It is predominantly composed of calcite (97%) but contains &lt;/span&gt;&lt;span&gt;inclusions of dolomite, layer silicates, framework silicates, and non-silicates. &lt;/span&gt;&lt;span&gt;The inclusions are heterogeneously distributed in the rock and commonly form &lt;/span&gt;&lt;span&gt;linear clusters that are dominated by dolomite + phlogopite + rutile ± chlorite. &lt;/span&gt;&lt;span&gt;Less abundant inclusions are: muscovite, talc, quartz, feldspar, pyrite and &lt;/span&gt;&lt;span&gt;apatite. All of the minerals that comprise the Shelburne Marble have nearly &lt;/span&gt;&lt;span&gt;end-member compositions. Mineral composition, grain size and associations of &lt;/span&gt;&lt;span&gt;the inclusions may significantly contribute to the durability (or weakness) of &lt;/span&gt;&lt;span&gt;marble used in buildings or monuments that are exposed to conditions of acid &lt;/span&gt;&lt;span&gt;precipitation. &lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/ofr87447</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Mineralogical characterization of the Shelburne Marble; a Vermont marble test stone used to study the effects of acid rain</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>