<p>Giant crystal in caves sounds more like a plot twist than a geological phenomena, but this week we learn how the Naica Mine crystals were formed!</p>

<h2>Fun Paper Friday</h2>

<ul>
<li><a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016GL069334" rel="nofollow">Head, D., and T. Vanorio. &quot;Effects of changes in rock microstructures on permeability: 3‐D printing investigation.&quot; Geophysical Research Letters 43.14 (2016): 7494-7502.</a></li>
<li><a href="https://news.stanford.edu/2016/08/10/stanford-scientists-show-print-rocks-3-d/" rel="nofollow">Standford News Article</a></li>
</ul>

<h2>Contact us:</h2>

<p><strong>Show</strong></p>

<ul>
<li><a href="https://www.patreon.com/dontpanicgeo" rel="nofollow">Support us on Patreon!</a></li>
<li><a href="http://www.dontpanicgeocast.com" rel="nofollow">www.dontpanicgeocast.com</a></li>
<li><a href="https://softwareunderground.org" rel="nofollow">SWUNG Slack</a></li>
<li><a href="https://twitter.com/dontpanicgeo" rel="nofollow">@dontpanicgeo</a></li>
<li><a href="mailto:show@dontpanicgeocast.com" rel="nofollow">show@dontpanicgeocast.com</a></li>
</ul>

<p><strong>John Leeman</strong></p>

<ul>
<li><a href="http://www.johnrleeman.com" rel="nofollow">www.johnrleeman.com</a></li>
<li><a href="https://twitter.com/geo_leeman" rel="nofollow">@geo_leeman</a></li>
</ul>

<p><strong>Shannon Dulin</strong></p>

<ul>
<li><a href="https://twitter.com/ShannonDulin" rel="nofollow">@ShannonDulin</a></li>
</ul>

Episode 358 - "Put a pin in it" Surveillance Balloons

John Leeman and Shannon Dulin discuss geoscience and technology weekly for your enjoyment! Features include guests, fun paper Friday selections, product reviews, and banter about recent developments. Shannon is a field geologist who tolerates technology and John is a self-proclaimed nerd that tolerates geologists.