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	<title>RockHoundBlog &#187; Mineral of the day</title>
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	<description>rockhound, minerals, science, geology, rocks</description>
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		<title>Oregon Sunstone</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/oregon-sunstone/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/oregon-sunstone/#comments</comments>
		<pubDate>Sun, 31 Oct 2010 18:49:26 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[Rare Rocks!]]></category>
		<category><![CDATA[Video]]></category>
		<category><![CDATA[oregon sunstone]]></category>
		<category><![CDATA[rough sunstone]]></category>
		<category><![CDATA[sunstone]]></category>
		<category><![CDATA[sunstone gems]]></category>
		<category><![CDATA[sunstone mining]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1674</guid>
		<description><![CDATA[world&#8217;s largest  Oregon Sunstone: A variety known as Oregon sunstone is found in Harney County, Oregon and in eastern Lake County north of Plush. Only Oregon sunstone contains inclusions of copper crystals. Oregon sunstone can be found as large as three inches across. The copper leads to varying color within some stones, where turning one [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Sodalite</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/sodalite/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/sodalite/#comments</comments>
		<pubDate>Tue, 19 Oct 2010 00:53:40 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[Video]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1645</guid>
		<description><![CDATA[Sodalite is a rich royal blue mineral widely enjoyed as an ornamental gemstone. Although massive sodalite samples are opaque, crystals are usually transparent to translucent. Sodalite is a member of the sodalite group and—together with hauyne, nosean, and lazurite—is a common constituent of lapis lazuli. Discovered in 1806 in the Ilimaussaq intrusive complex in Greenland, [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Silver</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/silver/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/silver/#comments</comments>
		<pubDate>Mon, 18 Oct 2010 06:27:43 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[history of silver]]></category>
		<category><![CDATA[How to Make Your Own Jewelry]]></category>
		<category><![CDATA[melting silver]]></category>
		<category><![CDATA[pouring silver]]></category>
		<category><![CDATA[silver]]></category>
		<category><![CDATA[silver jewellery]]></category>
		<category><![CDATA[silver jewelry]]></category>
		<category><![CDATA[silver medicinal]]></category>
		<category><![CDATA[silver metal]]></category>
		<category><![CDATA[silver price]]></category>
		<category><![CDATA[silver rate]]></category>
		<category><![CDATA[troy silver bar]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1638</guid>
		<description><![CDATA[Silver Silver ( /ˈsɪlvər/) is a metallic chemical element with the chemical symbol Ag (Latin: argentum, from the Indo-European root *arg- for &#8220;grey&#8221; or &#8220;shining&#8221;) and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal. The metal occurs [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Utah Ice</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/utah-ice/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/utah-ice/#comments</comments>
		<pubDate>Thu, 14 Oct 2010 04:38:48 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[Video]]></category>
		<category><![CDATA[desert rose]]></category>
		<category><![CDATA[gypsum]]></category>
		<category><![CDATA[gypsum flower]]></category>
		<category><![CDATA[satin spar]]></category>
		<category><![CDATA[Selenite]]></category>
		<category><![CDATA[Utah Ice]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1609</guid>
		<description><![CDATA[Someone asked me if I ever heard of the mineral &#8220;Utah Ice&#8221;.  Hmph I said&#8230;  After some digging (no pun intended) this is what I came up with. Question: This stuff looks almost like glass, specially when it gets into the water it looks alot like glass, but its not. My warning is, that you [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Lake Superior agate</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/lake-superior-agate/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/lake-superior-agate/#comments</comments>
		<pubDate>Mon, 27 Sep 2010 04:49:50 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[Video]]></category>
		<category><![CDATA[chalcedony]]></category>
		<category><![CDATA[embedded agates]]></category>
		<category><![CDATA[eye agate]]></category>
		<category><![CDATA[fortification agate]]></category>
		<category><![CDATA[Lake Superior agate]]></category>
		<category><![CDATA[Minnesota agate]]></category>
		<category><![CDATA[Minnesota gemstone]]></category>
		<category><![CDATA[Minnesota rockhound]]></category>
		<category><![CDATA[Minnesota travel]]></category>
		<category><![CDATA[Minnesota vacation]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1521</guid>
		<description><![CDATA[The Lake Superior agate is a type of agate stained by iron and found on the shores of Lake Superior. Its wide distribution and iron-rich bands of color reflect the gemstone&#8217;s geologic history in Minnesota. In 1969 the Lake Superior agate was designated by the Minnesota Legislature as the official state gemstone. The Lake Superior [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Bornite &#8211; Peacock Ore /  Peacock Copper</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/bornite-peacock-ore-peacock-copper/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/bornite-peacock-ore-peacock-copper/#comments</comments>
		<pubDate>Wed, 22 Sep 2010 03:51:35 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[Reader submissions- Rockhound stores]]></category>
		<category><![CDATA[Video]]></category>
		<category><![CDATA[Bornite]]></category>
		<category><![CDATA[bornite video]]></category>
		<category><![CDATA[mineral video]]></category>
		<category><![CDATA[Peacock copper]]></category>
		<category><![CDATA[Peacock Ore]]></category>
		<category><![CDATA[Peacock video]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1514</guid>
		<description><![CDATA[Bornite is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the orthorhombic system.  Also called &#8216;the stone of happiness&#8216;. Appearance Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places. Its striking iridescence gives it the nickname peacock copper or peacock [...]]]></description>
		<wfw:commentRss>http://rockhoundblog.com/mineral-of-the-day/bornite-peacock-ore-peacock-copper/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Pegmatite</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/pegmatite/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/pegmatite/#comments</comments>
		<pubDate>Tue, 10 Aug 2010 11:17:06 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[find Pegmatite]]></category>
		<category><![CDATA[mining Pegmatite]]></category>
		<category><![CDATA[Pegmatite]]></category>
		<category><![CDATA[rockhounding Pegmatite]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1390</guid>
		<description><![CDATA[A pegmatite is a very coarse-grained, intrusive igneous rock composed of interlocking grains usually larger than 2.5 cm in size; such rocks are referred to as pegmatitic. Most pegmatites are composed of quartz, feldspar and mica; in essence a granite. Rarer intermediate composition and mafic pegmatites containing amphibole, Ca-plagioclase feldspar, pyroxene and other minerals are known, [...]]]></description>
		<wfw:commentRss>http://rockhoundblog.com/mineral-of-the-day/pegmatite/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Pyrite or Foolsgold</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/pyrite-or-foolsgold/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/pyrite-or-foolsgold/#comments</comments>
		<pubDate>Mon, 26 Jul 2010 05:16:19 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>
		<category><![CDATA[Foolsgold]]></category>
		<category><![CDATA[is it gold?]]></category>
		<category><![CDATA[Pyrite]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1348</guid>
		<description><![CDATA[The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS2. This mineral&#8217;s metallic lustre and pale-to-normal, brass-yellow hue have earned it the nickname fool&#8217;s gold because of its resemblance to gold. The color has also led to the nicknames brass, brazzle and Brazil, primarily used to refer to pyrite found in [...]]]></description>
		<wfw:commentRss>http://rockhoundblog.com/mineral-of-the-day/pyrite-or-foolsgold/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Amphibole</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/amphibole/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/amphibole/#comments</comments>
		<pubDate>Thu, 15 Jul 2010 19:23:34 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1292</guid>
		<description><![CDATA[Amphibole (pronounced /ˈæmfɨboʊl/) defines an important group of generally dark-colored rock-forming inosilicate minerals, composed of double chain SiO4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Amphiboles crystallize into two crystal systems, monoclinic and orthorhombic. In chemical composition and general characteristics they are similar to the pyroxenes. [...]]]></description>
		<wfw:commentRss>http://rockhoundblog.com/mineral-of-the-day/amphibole/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Feldspar- Mineral of the day.</title>
		<link>http://rockhoundblog.com/mineral-of-the-day/feldspar-mineral-of-the-day/</link>
		<comments>http://rockhoundblog.com/mineral-of-the-day/feldspar-mineral-of-the-day/#comments</comments>
		<pubDate>Wed, 14 Apr 2010 05:12:56 +0000</pubDate>
		<dc:creator>Gary</dc:creator>
				<category><![CDATA[Mineral of the day]]></category>

		<guid isPermaLink="false">http://rockhoundblog.com/?p=1203</guid>
		<description><![CDATA[Feldspars (KAlSi3O8 &#8211; NaAlSi3O8 &#8211; CaAl2Si2O8) are a group of rock-forming tectosilicate minerals which make up as much as 60% of the Earth&#8217;s crust. Feldspars crystallize from magma in both intrusive and extrusive igneous rocks, as veins, and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar [...]]]></description>
		<wfw:commentRss>http://rockhoundblog.com/mineral-of-the-day/feldspar-mineral-of-the-day/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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