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Project GutenbergJohann Gottlob von Kurr’s The Mineral Kingdom, 1859Minerals of the world in 24 hand-coloured lithographed plates<a href="https://flashbak.com/johann-gottlob-von-kurrs-the-mineral-kingdom-1859-473822/?utm_source=rss&utm_medium=rss&utm_campaign=johann-gottlob-von-kurrs-the-mineral-kingdom-1859" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://flashbak.com/johann-gottlob-von-kurrs-the-mineral-kingdom-1859-473822/?utm_source=rss&utm_medium=rss&utm_campaign=johann-gottlob-von-kurrs-the-mineral-kingdom-1859</a>By Sheldon D. Via: BioDiversityLibrary<a href="https://en.wikipedia.org/wiki/Johann_Gottlob_von_Kurr" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Johann_Gottlob_von_Kurr</a><a href="https://mastodon.social/tags/books" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#books</a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://mastodon.social/tags/minerology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerology</a>

Niels de Winter<a href="https://mastodon.social/tags/Stonehenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Stonehenge</a> central <a href="https://mastodon.social/tags/rock" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rock</a> probably came from <a href="https://mastodon.social/tags/Scotland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Scotland</a>Based on nice <a href="https://mastodon.social/tags/geochemistry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geochemistry</a> and <a href="https://mastodon.social/tags/minerology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerology</a> work on the central alter stone.<a href="https://mastodon.social/tags/archaeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#archaeology</a> <a href="https://mastodon.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://mastodon.social/tags/UK" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UK</a> <a href="https://mastodon.social/tags/zircon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#zircon</a> <a href="https://www.nature.com/articles/s41586-024-07652-1" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.nature.com/articles/s41586-024-07652-1</a>

Heron&Fox PhotoA contender in this round of <a href="https://universeodon.com/tags/MinCup23" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MinCup23</a>, <a href="https://universeodon.com/tags/Calcite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Calcite</a> comes in several forms, including <a href="https://universeodon.com/tags/Optical" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Optical</a> Calcite, sometimes called <a href="https://universeodon.com/tags/Iceland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Iceland</a> Spar or <a href="https://universeodon.com/tags/Iceland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Iceland</a> Crystal, the strong <a href="https://universeodon.com/tags/birefringence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#birefringence</a> properties are on display in this <a href="https://universeodon.com/tags/photograph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photograph</a> as the <a href="https://universeodon.com/tags/crystal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#crystal</a> creates a small <a href="https://universeodon.com/tags/rainbow" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rainbow</a>-like formation on the right side. This property has made it a candidate for the somewhat mysterious <a href="https://universeodon.com/tags/SunStone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SunStone</a> from <a href="https://universeodon.com/tags/Viking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Viking</a> legend, able to find the Sun despite overcast conditions by looking for the double <a href="https://universeodon.com/tags/refraction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#refraction</a>. This form of calcite often cleaves into parallelepiped (parallelogram extended into 3D) sections, such as the one pictured.Vote in <a href="https://universeodon.com/tags/MinCup23" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MinCup23</a>: <a href="https://www.mineralcup.org/2023/campaigns/campaigns/campaigns/round-2-match-5" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.mineralcup.org/2023/campaigns/campaigns/campaigns/round-2-match-5</a>Get a print with this image, or other merchandise at <a href="https://heronfox.pixels.com/featured/calcite-specimen-4-heron-and-fox.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://heronfox.pixels.com/featured/calcite-specimen-4-heron-and-fox.html</a><a href="https://universeodon.com/tags/OpticalCalcite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OpticalCalcite</a>, <a href="https://universeodon.com/tags/IcelandSpar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IcelandSpar</a>, <a href="https://universeodon.com/tags/Minerology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Minerology</a>, <a href="https://universeodon.com/tags/VoteCalcite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#VoteCalcite</a>, <a href="https://universeodon.com/tags/Photograph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Photograph</a>, <a href="https://universeodon.com/tags/MacroPhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MacroPhotography</a>

Sunguramy :nb_lily:Aragonite Crystals<a href="https://flipping.rocks/tags/caves" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#caves</a> <a href="https://flipping.rocks/tags/caving" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#caving</a> <a href="https://flipping.rocks/tags/speleology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#speleology</a> <a href="https://flipping.rocks/tags/minerals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerals</a> <a href="https://flipping.rocks/tags/minerology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerology</a> <a href="https://flipping.rocks/tags/crystals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#crystals</a>

attresa.geo<a href="https://ravenation.club/tags/Sodalite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sodalite</a> Na8(Al6Si6O24)Cl2 is royal blue varieties widely used as an <a href="https://ravenation.club/tags/ornamental" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ornamental</a> <a href="https://ravenation.club/tags/gemstone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gemstone</a>. It is a member of the sodalite group with <a href="https://ravenation.club/tags/lazurite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lazurite</a>, <a href="https://ravenation.club/tags/tugtupte" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tugtupte</a> and etec.. First discovered by Europeans 1811 in <a href="https://ravenation.club/tags/Greenland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Greenland</a>. It is one of the most beautiful <a href="https://ravenation.club/tags/stones" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stones</a> for me.<a href="https://ravenation.club/tags/geo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geo</a> <a href="https://ravenation.club/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://ravenation.club/tags/mineral" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mineral</a> <a href="https://ravenation.club/tags/Earth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Earth</a> <a href="https://ravenation.club/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://ravenation.club/tags/feldspathoid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#feldspathoid</a> <a href="https://ravenation.club/tags/minerology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerology</a>

attresa.geoThis is the <a href="https://ravenation.club/tags/ruby" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ruby</a> <a href="https://ravenation.club/tags/cristal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cristal</a>⛰️ <a href="https://ravenation.club/tags/minerology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerology</a> <a href="https://ravenation.club/tags/mineral" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mineral</a> <a href="https://ravenation.club/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://ravenation.club/tags/petrology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#petrology</a> <a href="https://ravenation.club/tags/geo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geo</a> <a href="https://ravenation.club/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://ravenation.club/tags/gemstone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gemstone</a>

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