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Blue Opal Gemstone, Science & More
Blue Opal Gemstone The blue opal gemstone, like all other types of opal, is not a mineral. Instead, it is an amorphous mineraloid, which means it is a substance that comprises a specific arrangement of smaller microcrystalline silicas, which result in a blue spectrum of light reflection. Blue opal has an appealing luster and appearance,…
John Muir Biography – Father of National Parks & Geology
John Muir Biography The Father of National Parks & Geology John Muir was a Scottish-American writer, lecturer, and an early influencer for nature, geology, wildlife, and more. He’s also known as an honorary public figure for advocating the conservation of wildlife from the mid-1800s to the early 1900s. To many, he was a self-mastered glaciologist,…
USGS 7.5 Minute Long Beach, CA Quadrangle 2018 Topo Map
USGS 7.5 Minute Long Beach, CA Quadrangle 2018 Topo Map To download the 2018 United States Geological Survey USGS 7.5 Minute Long Beach, CA Quadrangle Topo Map, please use the link below. PDF Download – USGS 7.5 Minute Long Beach, CA Quadrangle 2018 Topo Map
Methane on Mars
Methane on Mars Geologists understand that methane on Mars could relate to possible signs of past life, future sustainability, and similar geological processes to Earth. And sources of methane gas in the Mars atmosphere are presumably from biogenic and petrogenic processes. For example, microbial and thermal decomposition of underground organic matter, or tectonic and volcanic…
The Black Quartz Crystal is “Smokey Quartz” (or Morion)
The Black Quartz Crystal (Morion) is Actually the Smokey Quartz Gemstone The black quartz crystal is actually the same mineral as smokey quartz and morion quartz, and only differs from the common quartz mineral due to its aluminum content. In fact, aluminum is the root cause of its light-absorbing characteristic, which causes a translucent-gray to…
What is Common Opal?
What is Common Opal? Common Opal is a specific type of opal that usually exists in one color, and has no play-of-color when flashed with light. Unlike precious opal, common opal appears to be “glassy” with transparent and translucent properties. A common blue opal or fire opal gemstone will predominantly reflect one pigment of color from any…