[DOC] [TLE] Cleaning mineral specimens: a guide for mineral collectors and field ... [PAR] It is used to dissolve the iron oxide (brown) stain on all minerals. ... There are two 
main uses for hydrochloric acid: removing carbonates like calcite that often are 
the last ... for neutralizing and washing This final batch can be diluted 1:1 with 
water. ... appearance results but this usually disappears in later chemical 
treatments. [DOC] [TLE] The "Acid Test" for Carbonate Minerals and Carbonate Rocks [PAR] A drop of hydrochloric acid will fizz when it is in contact with carbonate ... When 
acid begins to effervesce (fizz) on a specimen, a reaction similar to the ... (CO2), 
water (H2O), dissolved calcium (Ca++), and dissolved chlorine (Cl--). ... Some 
rocks contain carbonate minerals, and the acid test can be used to help identify 
them. [DOC] [TLE] Calcite: The mineral Calcite spar information and pictures [PAR] Although Calcite and Aragonite contain the same chemical composition, they 
differ in ... Hardness, cleavage, fluorescence, and effervescence with 
hydrochloric acid. ... Calcite formed by mineral-rich water that deposits the 
dissolved mineral on the ... (Iceland Spar may occasionally also be used as a 
synonym for Calcite.). [DOC] [TLE] Determination of the Hardness of Water One of the ... - Chemistry [PAR] deposits, hardness is usually reported as parts per million (ppm) of calcium 
carbonate (by ... The EDTA solution can then be used to determine the .... A 
0.2431 g sample of CaCO3 is dissolved in 6 M HCl and the resulting solution is 
diluted ... samples. We will then calculate a class average. 2. The hardness of the 
water... [DOC] [TLE] How to clean rock and mineral specimens - Inland Lapidary [PAR] Whichever method you use be careful in the cleaning process, follow the 
instructions ... Be aware that oxalic acid can harm calcite crystals and carbonates. 
... Keep a large container of clear water handy to wash off any chemical spills. ... 
on quartz may require you to wash them in a muriatic (dilute hydrochloric) acid 
solution. [DOC] [TLE] Rock Currier - Cleaning Quartz - Mindat.org [PAR] Jul 3, 2014 ... The same methods described below can also be used to clean other hard ... If 
you put the specimen in acid, the calcite would dissolve in the acid while .... I 
know of no chemical method that makes a dull quartz crystal shiny. ..... or pool 
acid is hydrogen chloride gas, HCl, that has been dissolved in water. [DOC] [TLE] Carbonates & Other Rocks [PAR] Apr 17, 2013 ... Although you will use only the Folk classification in lab, you should also ... In 
carbonates the matrix can range from fine grained carbonate mud to crystalline 
calcite or dolomite. ... by thin concentric layers of chemically precipitated calcite. 
... because they do not dissolve in HCl) are grains of nodules of chert. [DOC] [TLE] How can hardness in water be removed?- Learn Chemistry [PAR] The hardness of temporarily and permanently hard water is tested using ... If the 
suggested method here is used, the beakers of solutions should be .... c Scrape 
some of the solid residue from b into a test-tube and add dilute hydrochloric acid. 
... A and B contain dissolved calcium salts that react with soap solution to form an
... [DOC] [TLE] Calcium carbonate - Wikipedia [PAR] Calcium carbonate is a chemical compound with the formula CaCO3. It is a 
common substance .... A paste made from calcium carbonate and deionized 
water can be used to clean .... Travertine calcium carbonate deposits from a hot 
spring ... And dissolved carbon dioxide is in equilibrium with atmospheric carbon 
dioxide... [DOC] [TLE] Chapter 7 - PHYSICAL AND CHEMICAL ANALYSES - World Health ... [PAR] For preparing some reagents, dilution water requires special ... stock solution 
should be prepared than will be used within the next six months. ... HCl H2SO4 
HNO3 ... The alkalinity of some waters is due only to the bicarbonates of calcium 
and magnesium. .... Dissolve 0.1 g ascorbic acid in water and make up to 100 ml 
in a. [DOC] [TLE] Fighting ScaleRemoval and Prevention - Schlumberger [PAR] Some

Question: Diluted in water, this chemical, HCI, can be used to dissolve calcite deposits on specimens
Answer: hydrochloric acid