The World's Weirdest Volcano; Ol Doinyo Lengai

There exists a volcano whose "cold" lava resembles water, is enriched in valuable rare earth elements, and can flow at speeds exceeding 30 miles per hour. And, once this lava cools, it rapidly changes in color from black to white. Found at no other active volcano, Ol Doinyo Lengai's natrocarbonatite lava is quite a fascinating phenomena, which this video will attempt to explain.

Note: "Cold" in this case indicates a lava with a temperature of 500 - 600 degrees Celsius (still quite hot and should not be touched) when most lava flows average 900 - 1200 degrees Celsius when freshly erupted.

Martin Rietze (Photographer), Westend61 GmbH / Alamy Stock Photo (Contributor), Image ID: A5DBT1, https://www.alamy.com/tanzania-volcan..., Licensed Image. This image was overlaid with text in additional to GeologyHub made graphics (the image border & the GeologyHub logo).

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Sources/Citations:
[1] Thomas, Nicole; Tobias P. Fischer Dr.; and Adrian J. Brearley Dr. "Magma Mixing at OlDoinyo Lengai: A Mineralogical and Trace Element Analysis of the 2007-8 Eruption." (2018). https://digitalrepository.unm.edu/eps...
[2] Anatoly N. Zaitsev, Jörg Keller, Mineralogical and chemical transformation of Oldoinyo Lengai natrocarbonatites, Tanzania, Lithos, Volume 91, Issues 1–4, 2006, Pages 191-207, ISSN 0024-4937, https://doi.org/10.1016/j.lithos.2006.... (https://www.sciencedirect.com/science...)
[3] U.S. Geological Survey

0:00 A Strange Lava Flow
0:21 Ol Doinyo Lengai Volcano
0:40 An Unusual Composition
1:13 Lava Viscosity
1:57 Natrocarbonatite Formation
2:56 A Change in Color