The purple color in ghost town glass comes from small amounts of manganese in the glass when it has been exposed to ultraviolet light.
bit.ly/3pg9VCX
1
24
1
136
Forget rubies, garnets and sapphires. Fluorite may be the world's most colourful mineral, because of the enormous range of brilliant and even iridescent Colors it displays.
bit.ly/3aSYrzi
25
1
155
A cluster of double terminated quartz (and color zoned amethyst) crystals from Namibia.
Photo: Lithoi Minerals
#minerals
6
231
9
1,235
Typically found in the botryoidal habit of the "parent" goethite. It may be iridescent.
bit.ly/3mbM7ke
1
7
1
71
Drainage pattern a pattern created by stream erosion over time that reveals characteristics of the kind of rocks and geologic structures in a landscape region drained by streams.
bit.ly/3gidDsf
6
60
These are the vibrations of Eagle Plume Tower, a rock landform in Southeastern Utah.
Utah Geologists Translate Vibrations of Rocky Landforms Into Audible Tones
bit.ly/3NbAkMj
16
2
66
Several forces, which soil scientists call the “factors of soil formation”, influence #soil color. These include climate, parent material (sediment or rock that soil forms in), biology, landscape
bit.ly/3OdUS8j
10
57
Red Gem Vanadinite Crystal Cluster Crystal from - Mibladen, Morocco
Photo: @ExoticCrystals
#minerals #crystals
12
303
31
1,696
Parapuzosia seppenradensis is the largest known species of ammonite. It lived during the Late Cretaceous period. A specimen found in Germany in 1895 measures 1.8 m (5.9 ft) in diameter,
bit.ly/2PW5iAx
4
21
2
134
Weird Water Dynamics Fuel Deep Earthquakes and Fist-Sized #Diamonds
What causes the deep Earth's most mysterious earthquakes? The cause of Earth's deepest earthquakes has been a mystery to science for more than a century,
bit.ly/3QDL5dA
20
1
77
Bolivia has the largest collection of dinosaur tracks in the world comprising footprints of 294 different kinds of #dinosaurs
bit.ly/3yb9gq8
2
27
1
107
