The Cueva de los Cristales is home to the largest natural mineral crystals ever found. The crystals are made of gypsum (hydrated CaSO4) that precipitated out of groundwater over hundreds of thousands of... continue reading
posted by gluonium 1 decade 6 years 10 months 4 weeks ago • 4,208 viewsRyjkyj's Personal Sift Tour
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Updated: 1 decade 4 years 7 months 2 weeks ago
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Not everything I love is here yet but it's a good start.