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The protolith of hornfels is typically a fine-grained sedimentary rock such as shale or mudstone. These rocks undergo metamorphism due to high temperatures and pressure, resulting in the formation of hornfels.
Hornfels is a metamorphic rock that is often used in the construction industry for making tiles, countertops, and other decorative building materials. It can also be used as a material for sculptures or as a decorative stone in landscaping.
The size of the grains in a sedimentary rock can be determined by examining the texture of the rock. Coarser grains indicate a larger grain size, while finer grains indicate a smaller grain size. Other features that can provide clues to grain size include the sorting (uniformity of grain sizes) and rounding of the grains.
Shale is a sedimentary rock that typically has the smallest grain size due to its fine-grained and compacted nature.
Obsidian has a small grain size due to its volcanic origin, which means that it cools quickly and does not have time to form large crystals. It is typically fine-grained and exhibits a glassy appearance.
Hornfels is a type of rock that is metamorphic. They usually have bands and fine grain, and can come in different colors, such as light gray and dark gray.
hornfels is red
there is no visible grain size
Small to medium grain size.
Particle size is another name for the term grain size.
Slaet in grain size is the size of sand crystals.
I too would like an answer to this question as it seems hornfels could be of varying grade dependant on the temperature. The facies of contact metamorphism progress in temperature at relatively low pressure from the Albite-Epidote Hornfels Facies to the Hornblende Hornfels Facies, to the Pyroxene Hornfels Facies. It seems that hornfels do have differant grades.
The protolith of hornfels is typically a fine-grained sedimentary rock such as shale or mudstone. These rocks undergo metamorphism due to high temperatures and pressure, resulting in the formation of hornfels.
The size of a grain can vary depending on the type, but generally, a grain is around 1-3 millimeters in size. Grain size can also be influenced by factors such as processing and variety.
The grain size of fine sand typically ranges from 0.075 to 0.425 millimeters in diameter.
The grain size of bituminous coal typically ranges from 0.5 to 2 inches. It is considered a medium-grain size coal, with a balance of fine and coarse particles. The grain size can vary depending on the specific source and processing of the coal.
The grain size of coal can vary, but it typically ranges from fine particles to larger chunks. Coal can be classified based on its grain size as fine, medium, or coarse coal. The grain size of coal can impact its combustion efficiency and handling characteristics.