Very fine crystals can easily clump together, affecting the texture and consistency of a product. Additionally, fine crystals can dissolve too quickly, leading to a sudden release of flavor or sweetness that may be overpowering. Fine crystals can also cause issues with product stability and shelf life.
A fine-grained igneous rock composed primarily of very small crystals of quartz is known as rhyolite. It forms from the rapid cooling of lava that is rich in silica, preventing the growth of large crystals. Rhyolite often has a light color and may contain other minerals such as feldspar and mica, but its primary characteristic is its high quartz content and fine texture. This rock is commonly found in volcanic regions and is the extrusive equivalent of granite.
Crystal size in these rock types is determined by their rate of cooling. Pegmatites have large crystals due to very slow cooling. Obsidian has microscopic crystals due to almost instantaneous cooling.
The name of a fine-grained rock embedded with crystals and gems is called a geode. Geodes are hollow rocks that contain various crystals and minerals, often formed in volcanic or sedimentary deposits. They are prized for their unique beauty and can be cut open to reveal the dazzling crystals inside.
It varies some metamorphic rocks are fine grained (eg slate) and others have very large crystals (eg an augen gneiss).
Large crystals found in a fine-grained rock can indicate that the rock cooled slowly, allowing the crystals to grow larger. This slow cooling process typically occurs deeper within the Earth's crust where temperatures are higher. The presence of large crystals in a fine-grained rock can also suggest that the rock underwent metamorphism, changing its original composition.
Very fine crystals can be difficult to separate from the solution, leading to lower yields. They also tend to trap impurities within their structure, affecting the purity of the final product. Additionally, fine crystals may have a tendency to stick together, forming clumps that are challenging to work with.
British usage- a very desirable residence.British usage- a very desirable residence.British usage- a very desirable residence.British usage- a very desirable residence.
Fine grained has larger crystals and coarse grained has smaller crystals
Fine grained has larger crystals and coarse grained has smaller crystals
extrusive
Because it doesn't absorb any visible light.
A fine-grained igneous rock composed primarily of very small crystals of quartz is known as rhyolite. It forms from the rapid cooling of lava that is rich in silica, preventing the growth of large crystals. Rhyolite often has a light color and may contain other minerals such as feldspar and mica, but its primary characteristic is its high quartz content and fine texture. This rock is commonly found in volcanic regions and is the extrusive equivalent of granite.
Rarity is relative. My experience and a quick perusal of mindat.org would suggest that jarosite is not very rare. (There are many hundreds of localities, and fine micro crystals can be easily purchased for a few bucks.) However, jarosite is indeed rare in large crystals or fine specimens of display quality.
He thought his new date was very desirable.
If a granite rock is made of smaller crystals, it would be called fine-grained or fine-grained granite.
A crystal of course!
Crystal size in these rock types is determined by their rate of cooling. Pegmatites have large crystals due to very slow cooling. Obsidian has microscopic crystals due to almost instantaneous cooling.