1 10 1 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/7c07587ccec8258cb010781124a0479b.jpg edb193c154ce6e3235f791c8162f84de https://wserv3.esc.cam.ac.uk/p1acollections/files/original/1065d0bade11c5ce4a1ea5321a39a27e.jpg a9a01f476ba1204e36ea0f961c5793d6 Physical Object An inanimate, three-dimensional object or substance. Note that digital representations of, or surrogates for, these objects should use Moving Image, Still Image, Text or one of the other types. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource <h2>Galena</h2> Description An account of the resource <div class="element"> <h3>Formula</h3> <div class="element-text"> <p>PbS</p> </div> </div> <div class="element"> <h3>Structure</h3> <div class="element-text"> <p>Non-silicate</p> </div> </div> <div class="element"> <h3>Crystal System</h3> <div class="element-text"> <p><em>Crystal system:</em><span> </span>cubic</p> </div> </div> <div class="element"> <h3>Physical Properties</h3> <div class="element-text"> <p><em>Colour in hand specimen:</em><span> </span>lead grey<br /><em>Streak:</em><span> </span>lead grey<br /><em>Lustre:</em><span> </span>metallic<br /><em>Cleavage:</em><span> </span>one, perfect<br /><em>Hardness:</em><span> </span>2.5</p> </div> </div> <div class="element"> <h3>Optical Properties</h3> <div class="element-text"> <p><em>Colour in plane polarised light:</em><span> </span>opaque<br /><em>Relief:</em><span> </span>high</p> </div> </div> <div class="element"> <h3>Mineral Specimens</h3> <div class="element-text"> <p class="NoSpacing"><strong><span>M412 </span></strong><strong><span>Quartz (with galena and pyrite)</span><span> </span></strong><br class="NoSpacing" /><strong>North Wales</strong><strong></strong><span> </span><br class="NoSpacing" />A mass of small hexagonal quartz prisms, with galena, pyrite and zinc blende.<span> </span><br class="NoSpacing" />Transparent, white to light grey<span> </span><br class="NoSpacing" />Galena: purple-black, shiny, platy habit, metallic<span> </span><br />Pyrite: metallic lustre, gold colour, cubic habit, “Fools’ gold”</p> </div> </div> <div class="element"> <h3>Mineral Name</h3> <div class="element-text">galena</div> </div> dense grey streak