21. MINI EPISODE: What the heck is Cumberlandite?

<p><i>Episode Source Material: </i></p><ul><li><a href="https://pubs.usgs.gov/bul/0597/report.pdf">GEOLOGY OF MASSACHUSETTS AND RHODE ISLAND</a> - 184</li><li><a href="https://ia600602.us.archive.org/18/items/americanjourna4251908newh/americanjourna4251908newh_bw.pdf">The American journal of science</a></li><li><a href="https://www.ereferencedesk.com/resources/state-symbols/rhode-island/rock.html">Rhode Island State Rock: Cumberlandite</a></li><li><a href="https://www.songofstones.com/products/cumberlandite-raw-cubes">Cumberlandite Raw Cubes stone of Venus – Song of Stones</a></li><li><a href="https://www.geocaching.com/geocache/GC51DR2_only-in-rhode-island">GC51DR2 Only in Rhode Island (Earthcache) in Rhode Island, United States created by Twohig260</a></li><li><a href="https://www.providencejournal.com/story/lifestyle/travel/2021/06/11/walking-ri-hunt-ris-rare-state-rock-while-hiking-cumberland/7615021002/">Walking RI: Hunt for RI's rare state rock at Cumberland's Blackall/Ballou Preserve</a></li><li><a href="https://www.waymarking.com/waymarks/WMZQ4H_Cumberlandite_Cumberland_Rhode_Island_USA">Cumberlandite - Cumberland, Rhode Island USA - Places of Geologic Significance on Waymarking.com</a></li><li><a href="https://preservation.ri.gov/sites/g/files/xkgbur406/files/pdfs_zips_downloads/survey_pdfs/cumberland.pdf">Historic and Architectural Resources of Cumberland RI</a></li><li><a href="https://en.wikipedia.org/wiki/Avalonia">Avalonia</a></li><li><a href="https://www.nationalgeographic.org/encyclopedia/igneous-rocks/#:~:text=Igneous%20rocks%20form%20when%20magma,is%20still%20inside%20the%20crust">Igneous Rocks</a>.</li><li><a href="https://www.universetoday.com/82009/how-are-igneous-rocks-formed/">2 Replies to “Igneous Rocks: How Are They Formed?”</a></li><li><a href="https://www.britannica.com/science/intrusive-rock">Intrusive rock | geology</a></li><li><a href="https://en.wikipedia.org/wiki/Gabbro">Gabbro</a></li><li><a href="https://en.wikipedia.org/wiki/Geology_of_Rhode_Island">Geology of Rhode Island</a></