1 10 1 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/0bf5d3a466fa7829e4ef2bdff830625a.jpg 6cd884f723303bde9f49b486c09d2b91 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/26bbd90e23750b6cd8f025a7c4477901.jpg a7e67bd99ca02148d530d0f06a0cc68b https://wserv3.esc.cam.ac.uk/p1acollections/files/original/301029738940ac75d82ed2ef3b0d90b2.jpg a9a01f476ba1204e36ea0f961c5793d6 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/96e67e3861b4a7dcb407f3b5f225bb27.jpg 30e1e24259599004ba7c7f6d73bf6953 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>Quartz</h2> Description An account of the resource <div class="element"> <h3>Formula</h3> <div class="element-text">SiO₂</div> </div> <div class="element"> <h3>Structure</h3> <div class="element-text"> <p>Framework silicate</p> </div> </div> <div class="element"> <h3>Crystal System</h3> <div class="element-text"> <p><em>Crystal system:</em><span> </span>trigonal (+)</p> </div> </div> <div class="element"> <h3>Physical Properties</h3> <div class="element-text"> <p class="NoSpacing"><em>Colour in hand specimen:</em><span> </span>colourless<span> </span><br class="NoSpacing" /><em>Lustre:</em><span> </span>vitreous<span> </span><br class="NoSpacing" /><em>Pleochroism:</em><span> </span>none<span> </span><br class="NoSpacing" /><em>Cleavage:</em><span> </span>none<span> </span><br /><em>Hardness:</em><span> </span>7</p> </div> </div> <div class="element"> <h3>Optical Properties</h3> <div class="element-text"> <p class="NoSpacing"><em>Colour in plane polarised light:</em><span> </span>colourless<span> </span><br class="NoSpacing" /><em>Pleochroism:</em><span> </span>none<span> </span><br class="NoSpacing" /><em>Relief:</em><span> </span>low<span> </span><br /><em>Birefringence:</em><span> </span>0.009; 1^st<span> </span>order grey</p> </div> </div> <div class="element"> <h3>Mineral Specimens</h3> <div class="element-text"> <p class="NoSpacing"><strong><span>M410 </span></strong><strong><span>Quartz</span></strong><span> </span><br class="NoSpacing" />Characteristic prismatic crystal form: hexagonal cross-section, needle-like; hexagonal prism surmounted by a hexagonal pyramid<span> </span><br class="NoSpacing" />Colourless, transparent, milky in places<span> </span><br class="NoSpacing" /><strong></strong></p> <p class="NoSpacing"><strong><span>M411 </span></strong><strong><span>Quartz</span></strong><span> </span><br class="NoSpacing" /><strong>Madagascar</strong><strong></strong><span> </span><br class="NoSpacing" />Colourless, transparent quartz fragment, milky due to cracks and crystal boundaries<span> </span><br class="NoSpacing" />Vitreous lustre, conchoidal fracture, no cleavage</p> <p class="NoSpacing"><strong><span>M412 </span></strong><strong><span>Quartz (with galena and pyrite)</span></strong><span> </span><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 class="NoSpacing" />Pyrite: metallic lustre, gold colour, cubic habit, “Fools’ gold”</p> </div> </div> <div class="element"> <h3>Rock Specimens</h3> <div class="element-text"> <p><a href="/p1acollections/exhibits/show/igneous-rocks/l101">L101 Granite</a><span> </span><br /><a href="/p1acollections/exhibits/show/igneous-rocks/l110">L110 Rhyolite, porphyritic (quartz porphyry)</a><span> </span><br /><a href="/p1acollections/exhibits/show/igneous-rocks/l120">L120 Granodiorite</a><span> </span><br /><a href="/p1acollections/exhibits/show/sedimentary-rocks/l311">L311 Conglomerate, matrix</a><span> </span><br /><a href="/p1acollections/exhibits/show/sedimentary-rocks/l323">L323 Sandstone, arenite</a><span> </span><br /><a href="/p1acollections/exhibits/show/sedimentary-rocks/l370">L370 Chert, flint nodule, cryptocrystalline</a><span> </span><br /><a href="/p1acollections/exhibits/show/metamorphic-rocks/l504">L504 Garnet schist</a><span> </span><br /><a href="/p1acollections/exhibits/show/metamorphic-rocks/l521">L521 Quartzite</a></p> </div> </div> <div class="element"> <h3>Mineral Name</h3> <div class="element-text">silica<br />quartz</div> </div> igneous metamorphic milky sedimentary vitreous