Claudia Zahn<p>A septarian concretion is a unique rock formation characterized by its striking cracked or geometric pattern. These formations are composed of a combination of minerals, such as <a href="https://mastodon.social/tags/calcite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>calcite</span></a>, <a href="https://mastodon.social/tags/aragonite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aragonite</span></a>, <a href="https://mastodon.social/tags/barite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>barite</span></a>, and sometimes <a href="https://mastodon.social/tags/pyrite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pyrite</span></a>, encased in a hard outer layer of <a href="https://mastodon.social/tags/limestone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>limestone</span></a> or <a href="https://mastodon.social/tags/mudstone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mudstone</span></a>.<br><a href="https://www.geologyin.com/2017/12/what-is-septarian-concretion.html?fbclid=IwY2xjawF6ZotleHRuA2FlbQIxMQABHUlrg-EOtQBG1g5VNbu0cwPxq6jrghNg1XJrh0GHd4ddD7lCpNgQ3kI3Og_aem_vWK47Kt4Nh7FQadUWEPG_w" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">geologyin.com/2017/12/what-is-</span><span class="invisible">septarian-concretion.html?fbclid=IwY2xjawF6ZotleHRuA2FlbQIxMQABHUlrg-EOtQBG1g5VNbu0cwPxq6jrghNg1XJrh0GHd4ddD7lCpNgQ3kI3Og_aem_vWK47Kt4Nh7FQadUWEPG_w</span></a><br>By <a href="https://mastodon.social/tags/GeologyWonders" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GeologyWonders</span></a><br><a href="https://mastodon.social/tags/Geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Geology</span></a> <a href="https://mastodon.social/tags/GeologyPage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GeologyPage</span></a> <a href="https://mastodon.social/tags/Nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Nature</span></a> <a href="https://mastodon.social/tags/Minerals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Minerals</span></a> <a href="https://mastodon.social/tags/Crystals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Crystals</span></a> <a href="https://mastodon.social/tags/Gems" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Gems</span></a> <a href="https://mastodon.social/tags/Nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Nature</span></a> <a href="https://mastodon.social/tags/NatureLovers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NatureLovers</span></a> <a href="https://mastodon.social/tags/NaturePhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NaturePhotography</span></a> <a href="https://mastodon.social/tags/Photographer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Photographer</span></a> <a href="https://mastodon.social/tags/RockPorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RockPorn</span></a></p>