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</figure></iframe></div></div></figure><p id="80ad">In the video, I briefly show a sliver of mica. In the 19th century, this mineral was valuable for its use as a heatproof window material and, later, as an electrical insulator. Mica mined in the park was transported to Hull, now part of Gatineau, where it was cut and processed. However, only a few of the more than 14 known mines in the park were actually exploited on what can be considered an industrial scale. Many were little more than surface scratchings by farmers looking to create another source of income.</p><p id="a8fc">The largest mica crystal removed from this area weighed over 500 pounds (about 227 kilograms). I found my tiny piece near the remnants of a smaller mining operation next to Pink Lake. This mine functioned only for a few years at the beginning of the 20th century, but you can still look into the deep shaft of the mine.</p><p id="5ca3">I hope you enjoyed the virtual walk. I will now return my focus to <a href="https://readmedium.com/global-thermometer-breaks-record-7e6420b36895">COP28</a>, but I hope also to share some photos or stories of other walks I made before the end of the year.</p><p id="9c14"><a href="https://medium.com/subscribe/@Alex_Verbeek"><b>Subscribe</b></a><b> to receive email notifications when I publish new articles</b></p><p id="43dc">Email subscription via:</p><div id="416a" class="link-block">
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<h2>Get an email whenever Alexander Verbeek publishes.</h2>
<div><h3>Get an email whenever Alexander Verbeek publishes. By signing up, you will create a Medium account if you don't already…</h3></div>
<div><p>medium.com</p></div>
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<a href="https://readmedium.com/cop28-feverishly-negotiating-for-a-cooler-planet-9515dee04778">
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<h2>COP28: Feverishly Negotiating for a Cooler Planet</h2>
<div><h3>Our leaders, with their preference to postpone harsh decisions, have raised the climate change challenge simply by…</h3></div>
<div><p>medium.com</p></div>
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<a href="https://readmedium.com/cop28-climate-stocktake-an-alarming-reality-check-0221d94858d5">
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<h2>COP28 Climate Stocktake: An Alarming Reality Check</h2>
<div><h3>Like in any complicated process, from running a grocery store on the corner of your street to saving our planet from…</h3></div>
<div><p>medium.com</p></div>
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