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What is Precious Opal?
What is Precious Opal? Precious opal is any type of natural opal gemstone that shows a “play of color,” such as flakes of variable colors reflecting from inside the specimen upon white light exposure. Unlike common opal, a precious stone can reflect multiple colors from a single viewpoint. For an example of an opal stone…

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…

San Carlos Olivine & Peridot Minerals
San Carlos Olivine & Peridot The San Carlos Apache Reservation is one of the earth’s richest resources olivine-rich rocks. San Carlos Olivine is a name that refers to a group of closely related minerals, with very similar chemical compositions, that are found in igneous rocks in the Apache Reservation. These olivine minerals consist of silicon…

Bismuth (Bi) – The Popular Rainbow Element
Bismuth (Bi) – The Popular Rainbow Element Bismuth Chemical & Physical Properties Bismuth has been known and used by humans for hundreds of years for its host of remarkable properties. The mineral we know as bismuth was originally referred to as Wismut by 15th-century German monks, the name coming from the German phrase meaning “white mass.”…

Attire of a Geologist – Things that Geologists Wear and Use
The Attire of a Geologist: Things that Geologists Wear and Use The attire and tools of a geologist vary depending on their sector of work and responsibilities. However, most geologists need specialized gear, technology, and equipment to execute their tasks. This article aims to discuss the attire and tools that geologists wear and use. Updated…

