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Modern lantern mantle (operating).
An example of the element Lanthanum

Sample Image    |    Spin Video    |    QuickTimeVR Rotation
Lanthanum Modern lantern mantle operating
Modern lantern mantle (operating).
Old lantern mantles famously used thorium oxide as the incandescent material, and were thus radioactive. Modern versions instead use a mixture of rare earth salts including lanthanum oxide.
This photograph, and the 3D rotation video, were taken with the lantern lit, but the gas turned very low so you can see how the gas makes the mantle glow.
Source: Walmart
Contributor: Theodore Gray
Acquired: 8 February, 2009
Text Updated: 8 February, 2009
Price: $20
Size: 1.5"
Purity: <40%
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