<?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:contributor>E.J. Dwornik</dc:contributor>
  <dc:contributor>C. Milton</dc:contributor>
  <dc:creator>H. T. Evans Jr.</dc:creator>
  <dc:date>1986</dc:date>
  <dc:description>&lt;div class="article-section-wrapper "&gt;&lt;p&gt;Small (&amp;lt;0.5 mm), brownish-pink platy rosettes and yellow spherules, in cavities in nepheline syenite at the Diamond Jo quarry, Magnet Cove, Hot Spring County, Arkansas, have been identified as kassite, CaTi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;(OH)&lt;sub&gt;2&lt;/sub&gt;, a mineral previously known only from the Kola Peninsula, USSR. The Magnet Cove kassite is orthorhombic, in space group&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Ammm, A2mm, A222&lt;/i&gt;, or&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;A2,22&lt;/i&gt;, with unit-cell parameters&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;a&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;= 12.10,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;b&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;= 31.65,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;c&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;= 4.95 Å, and Z = 16;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;d&lt;/i&gt;&lt;sub&gt;calc&lt;/sub&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;= 3.28 g/cm&lt;sup&gt;3&lt;/sup&gt;. Principal X-ray powder lines [&lt;i&gt;d&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;in Å, (&lt;i&gt;I&lt;/i&gt;)] are 7.85(10), 3.26(7), 2.565(7), 1.910(8), 1.898(6). The X-ray powder and single-crystal data and density correspond to those reported by earlier workers for cafetite, (Ca,Mg)(Fe,Al)&lt;sub&gt;2&lt;/sub&gt;Ti&lt;sub&gt;4&lt;/sub&gt;O&lt;sub&gt;12&lt;/sub&gt;·4H&lt;sub&gt;2&lt;/sub&gt;O, from Kola, but the chemical and physical properties correspond to those given in their description of kassite. These earlier workers may have intermixed samples during their X-ray study of kassite and cafetite.&lt;/p&gt;&lt;/div&gt;&lt;div class="article-metadata-panel clearfix rs_skip"&gt;&lt;div class="article-metadata-taxonomies"&gt;&lt;div class="article-metadata"&gt;&lt;br data-mce-bogus="1"&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>GeoScienceWorld</dc:publisher>
  <dc:title>Kassite from the Diamond Jo quarry, Magnet Cove, Hot Spring County, Arkansas: The problem of cafetite and kassite</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>