Do Crushing Machine Have Gears. Hornfels is a hard brownish-black to black, fine-to-coarse grained stone that was used by prehistoric peoples primarily to make large expediency tools. Hornfels are also called as Whetstone in England. A variety of shades, particularly the more heavily banded ones, are often used for outdoor sculptures, as they are resistant to water-based erosion. Primitive humans used hornfels for a number of tools that they used in butchering game and working materials, such as knives, scrapers, perforators and projectile points. In some type of hornfels, distinctive rounded patches, composed of coarse-crystalline material, are seen; these are called spotted hornfels. The strength of Hornfels is 5.80 N/mm 2. A sample of places where it has been found can be seen in the geographic section below. What type of rock is Hornfels? It has also been popular in the use for billiard table tops, blackboards, tombstones, and commemorative tablets. Hornfels are used in a number of applications like in the field of construction and landscaping. Crushing shale and heating it with limestone makes cement for the construction industry. noun hornfels a dark, fine-grained metamorphic rock, the result of recrystallization of siliceous or argillaceous sediments by contact metamorphism. âFor scheelite-dominated deposits, there is the formation of marbles and locally extensive tremolite, silicification, and the development of extensive skarn and hornfels zones.â âThe hornfels can be very friable, as are the sakura ishi, which makes it easy to find nice crystal sections but difficult to collect matrix specimens.â Definition of hornfels in the Definitions.net dictionary. Hornfels is used as a road base and in concrete and is most often dark blue or almost a black color. Hornfels are used as aggregate in the roading and construction industries. [> Aggregate production line »More detailed Hornfels often include epidote, diopside, actinolite, or wollastonite and sometimes titanite and tremolite. Hornfels is used as a road base and in concrete and is most often dark blue or almost a black color. In the olden times, it is used as a tool like scrapers and knives. What is the rock hornfels used for? It is used as facing stone on the exterior of buildings, and used as floor tile and panels indoors. metamorphic rock Higher quality stone is quarried, cut, and polished for architectural use. recent questions recent answers. Hornfels definition: a hard compact fine-grained metamorphic rock formed by the action of heat from a magmatic... | Meaning, pronunciation, translations and examples Density of crushed hornfels hornfels rock crushed use in aggregate,equipment for sale, it is most commonly crushed for use as an aggregate in density of crushed get more info hornfels rock crushed use in aggregate request a quotation limestone crushing 3 grinding mill equipment crushed stone or angular rock is a form of construction . Hornfels is a fine-textured metamorphic rock formed by contact metamorphism.Contact metamorphism occurs when a mass of hot magma intrudes into preexisting rock, whether by injecting itself into a crack or by ascending in a large body (e.g., pluton).Rock in close proximity to the magma is temporarily softened or melted and recrystallizes with an altered texture, producing a hornfels.