Calcite is the most common rock-forming mineral in the world (King). It takes nearly up all of earth’s crust, so much without calcite lots of earth’s crust organisms could not be living (geology). Carbonate take up exactly 15% of the earth’s crust (Dietrich). Its class is carbonates and group calcite (galleries). Calcium carbonate is a widely dispense mineral that is known for its great varieties of crystals (Dietrich).
Calcite has more shapes than any other mineral (Soft school). It has been found in over 300 diffrent shapes (Soft school). Physical features/Identifications Calcite has many varies of colors such as, brown, red, pink, white, yellow, blue, orange, green, gray and black, However its periodically iridescent (galleries). It is found in all continents but mostly in Mexico and USA (lucas). The luster on calcite is very vitreous and dull in massive forms (geology). Crystal habits are extremely variable with mostly trigonal forms, most commonly on calcite crystals are scalenohedron, hexagon prisim, rhombohedron and pinacoid (galleries).
Calcite’s crystal system is hexagonal with a 3/2m (Sklute). Calcite’s cleavage is considered perfect, as it has three directions making it rhombohedron (geology). The diaphaneity on calcite is transparent to translucent meaning when shining light, you can see more clearly through different angels (King). The Mohs hardness in Calcite is rated 3 (galleries). It’s hardness on cleavage is also 3 (Sklute). According to (Sklute) The Fracture & Tenacity on Calcite is “conchoidal, brittle “. The fracture is rarely observed due to the cleavage (Friedmen). Its specific gravity 2.
7 which is average (galleries). Calcite’s streak is white (King.Distinguishing featuresIts fluorescence and effervescence with hydrochloric acid (Friedmen).
Many geologists say calcite’s rhombohedral cleavage is a striking feature in thin section (Sklute). Calcite is a primary mineral in both limestone and marble and Calcite obtains in both crystalline and massive forms (geology), Making it also occur in almost all rock types (Sklute). Limestone, Marble & Calcite arrange as one of the largest carbon storage room on our planet (King). Associations/ Chemical compositionsCalcite is extremely ordinary to find in metamorphic, sedimentary and igneous rocks (King).
Calcite is found in hydrothermal veins and hot springs deposits (geology). In addition, in sedimentary element calcite is also found in limestone rock or marble, which is a metamorphosed limestone (geology). Regularly calcite is only found existent in those rocks (geology). Some associated minerals with Calcite in hypothermal veins are Fluorite, quartz, copper, gold, carbonates, galena, sulfur and much more (galleries).
Furthermore, in sedimentary settings calcite can be associated with chert, anhydrite, dolomite, gypsum or halite (geology). According to geologist’s, calcite is a ubiquitous mineral (King).The chemical composition in Calcite is CaCO3 (King). However sometimes Mn, Fe, Sr and Mg replace Ca in some samples (geology). Scientist has tested on calcite and knows that it reacts to hydrochloric acid, and its reaction is demonstrated by vigorous effervescence (Dietrich). Economic/extractionCalcite has more uses than any other mineral, it is used as construction material, abrasive, agricultural soil treatment, construction aggregate, pigment and more (King).
these rocks have been used in many hundred years when it comes to building with them (King). Limestone blocks were used to build many of the pyramids in Egypt and Latin America (King). In conclusion, today in modern times we use polished and rough limestone rocks are still a very important for the architecture (King).
Furthermore, construction industries are the main primary source for using calcite of a form of marble and limestone (King). Building industries use calcite in structure of limestone and marble to create concrete and cement (King). With concrete we make walls, highways, buildings, bridges and many more structures (King). In addition, marble is easily to build with hence the fact its low hardness and so they make staircases, benches and much more (King). Not only is calcite used for architecture but also soil treatment (King). Over a hundred years, limestone and marble have been crumbled and spread across their field as a soil treatment (King). In addition, they are also heated to yield lime to make their crops grow in a faster scale (King). In modern days, the chemical industry calcite is used in acid neutralizer, so when the drains are clouted with acid mine drainage, the limestone would be crushed and disposed into the streams, they neutralize the water (King).
Calcium carbonate gain high-purity marbles and limestones can be turned into medicine for the stomach. Mixing flavoring and sugar, calcium carbonate is turned into chewable stomach tablets worn to neutralize of stomach acid and also to treat other ailments (King). Limestone is often used as sorbent material when burning fossil fuels (King). In addition, Calcium carbonate reacts to gases in combustion emissions such as sulfur dioxide, which they absorb them and prevent them from vanishing into the atmosphere (King). Extraction/processCarbonates are mostly found on the sea bottom, making it a deep extraction (ENVIRONMENTAL COUNCIL). the two most common extraction methods for deep minerals are longwall and room and pillar (ENVIRONMENTAL COUNCIL). When processing calcite, it goes into a jaw crusher, next a hoist, then in a storage hopper, after a vibrating feeder, then the mill and lastly cyclones ; bag filter (Lydia).
When using the calcium carbonates sorbent, they store carbon dioxide for a long period of time, and when they are being used to make cement or neutralized acid, the carbon dioxide releases making a significantly change on planet earth’s climate (King). Industries that use carbonate, give the waste to make sorbent treatment for wastewater (Sharrock). Scientist have recorded the before and after use of the sorbent, which the results were the physical portrait showed decrease of the specific surface area and density (Sharrock). Even though there are consequences when using sorbents or making neutralized acid, there are good that carbonates do to the environment and economic factors (King).
Shown from information before crushed limestone helps with the soil (King). In addition, heating yield lime to make farm growth faster than normal. In addition, dog food contains limestone (Soft school). In my opinion, I think the government should be still spending money to extract calcium carbonates, however have a limit.
From the information it is proven that calcite is used for so many things, and without it, it would be much more complex for the chemical, construction, lab industries. The information above tells that when the sorbents turn into neutralized acid it releases the carbon dioxide it has been absorbing past periods of time. That carbon dioxide makes a drastic change in our planets climate, causing it to cause dangerous actions on earth. However, referring to what I said about limits and not being as careless to make neutralized acid with weathered rocks and using carbonate waste as treatment for water waste.
But being more careful with what these decisions consequences are and how they will affect not only us but the planets future health and all. In conclusion, I would like the government to still invest into extracting calcite for the most important stuff for example, architecture, medicine, sorbents, naturized acids etc. Otherwise, I would like them to be more careful with how much their extracting and how that will change our community, planet and wealth & health.