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  2. Kidney stone disease - Wikipedia

    en.wikipedia.org/wiki/Kidney_stone_disease

    Kidney stone disease, also known as renal calculus disease, nephrolithiasis or urolithiasis, is a crystallopathy where a solid piece of material (renal calculus) develops in the urinary tract. [2] Renal calculi typically form in the kidney and leave the body in the urine stream. [2] A small calculus may pass without causing symptoms. [2]

  3. Hydroxyapatite - Wikipedia

    en.wikipedia.org/wiki/Hydroxyapatite

    Hydroxyapatite (IMA name: hydroxylapatite[5]) (Hap, HAp, or HA) is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH), often written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. [6] It is the hydroxyl endmember of the complex apatite group.

  4. Struvite - Wikipedia

    en.wikipedia.org/wiki/Struvite

    Struvite. Struvite (magnesium ammonium phosphate) is a phosphate mineral with formula: NH 4 MgPO 4 ·6H 2 O. Struvite crystallizes in the orthorhombic system as white to yellowish or brownish-white pyramidal crystals or in platy mica -like forms. It is a soft mineral with Mohs hardness of 1.5 to 2 and has a low specific gravity of 1.7. It is ...

  5. What causes kidney stones? What does kidney stone pain ... - AOL

    www.aol.com/causes-kidney-stones-does-kidney...

    Can children get kidney stones? Kidney stones have been found in children as young as the age of five. This is mostly related to choices in diet and not drinking enough water. How to prevent ...

  6. Calcium oxalate - Wikipedia

    en.wikipedia.org/wiki/Calcium_oxalate

    Calcium oxalate is a combination of calcium ions and the conjugate base of oxalic acid, the oxalate anion. Its aqueous solutions are slightly basic because of the basicity of the oxalate ion. The basicity of calcium oxalate is weaker than that of sodium oxalate, due to its lower solubility in water.

  7. Nephrite - Wikipedia

    en.wikipedia.org/wiki/Nephrite

    Rarely, in stones of exceptional gem quality, vague lines in the red part of the spectrum may be seen. [1] Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca 2 (Mg, Fe) 5 Si 8 O 22 (O H) 2. [1]