Kimberlite - Wikipedia
WEBOlivine crystals (green) are in a fine-grained matrix made up of clay minerals and carbonates (presented in blue, purple and buff colors). Kimberlite, an igneous rock and a rare variant of peridotite, is most commonly known to be the main host matrix for diamonds.
15 Blue Rocks and Minerals With Incredible Pictures (The Blues of ...
WEBJun 29, 2022 · Experience the beauty and variety of blue rocks, minerals and crystals. This guide highlights the unique characteristics of 15 types of blue rocks and minerals like Apatite, Sodalite, Azurite, and more, showcasing their significance in the world of rockhounding and gemstone and mineral collecting.
Pictures and Descriptions of Igneous Rock Types - ThoughtCo
WEBJun 2, 2019 · Learn more about the major types of igneous rock, which includes plutonic, intrusive, and extrusive igneous rocks.
Sodalite: The rare blue mineral used as a gem. - Geology.com
WEBSodalite is a rare rock-forming mineral found in igneous and metamorphic rocks. Its blue color makes it desirable for use as a gemstone, an ornamental stone, and an architectural material.
Larvikite - Wikipedia
WEBPolished larvikite (marketed as "Blue Pearl Granite"), showing labradorescence, is a popular decorative stone. Larvikite is an igneous rock, specifically a variety of monzonite, [1] notable for the presence of thumbnail-sized crystals of feldspar.
18 Incredible Blue Gems, Minerals, Crystals and Rocks (Photos)
WEBBlue rocks, minerals, and gems have captivated people’s imaginations for generations, from precious stones like sapphires and blue topaz to more common blue minerals like azurite and sodalite. These minerals have been used in …
Llanite : Properties, Formation, Composition » Geology Science
WEBOct 25, 2023 · Llanite is a rare type of igneous rock that is primarily composed of blue quartz, potassium feldspar (orthoclase), and biotite mica. It is known for its striking appearance, characterized by blue or bluish-gray quartz crystals embedded in a pink to reddish-brown matrix of orthoclase feldspar.
The 12 Most Common Violet, Purple, and Blue Minerals - ThoughtCo
WEBJul 26, 2024 · Low-silica (feldspathoid bearing) igneous rocks. To properly identify your violet, purple, or blue mineral, you first need to inspect it in a good light. Decide the best name for its color or colors, such as blue-green, sky blue, lilac, indigo, violet, or purple.
Azurite: The blue gem material, ore of copper, and pigment. - Geology.com
WEBAzurite is a deep blue mineral that people have used for thousands of years as an ore of copper, a gem material and as a blue pigment.
Igneous rock - Wikipedia
WEBIgneous rock (igneous from Latin igneus 'fiery'), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet 's mantle or crust.