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bournonite
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bournonite
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Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.
(Bed) Rocks and (Flint) Stones
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solar eclipse, sun, moon, astronomy, space
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9 Celestial Omens
Solar system illustration. (planets; sun)
Why Are Planets Round?
Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)
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Astronomical Observatory of the Mojon del Trigo. Long exposure using the star trail technique. Sierra Nevada National Park, in the province of Granada, Andalusia.
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Discover
Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society
The 10 Greatest Basketball Players of All Time
Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
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Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009
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The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)
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Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England
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Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)
The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad
bournonite
bournonite Bournonite with marcasite.

bournonite

mineral
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Related Topics:
sulfosalt
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bournonite, sulfosalt mineral, a lead, copper, and antimony sulfide (PbCuSbS3), that occurs as heavy, dark crystal aggregates and masses with a metallic lustre in association with other sulfur-containing minerals in many locations, including the Harz Mountains of Germany; a number of localities in Italy; Bolivia; Peru; Ontario, Canada; and the western United States. Its crystals have orthorhombic symmetry. For detailed physical properties, see sulfosalt (table).

This article was most recently revised and updated by Amy Tikkanen.