Lewy body dementia occurs when Lewy bodies accumulate and affect chemicals in the brain that lead to problems with thinking, movement, behavior and mood. Dementia is a severe loss of these abilities, especially thinking, and is one of the most common causes of dementia after Alzheimer's disease and vascular disease.
Definition of lazurite in the English dictionary The definition of lazurite in the dictionary is a rare blue mineral consisting of a sodiumâcalciumâaluminium silicate and sulphide: used as the gemstone lapis lazuli. Formula: 862.
Lapis lazuli, also known simply as lapis, is a blue metamorphic rock that has been used by people as a gemstone, sculpting material, and ornamental material for thousands of years.Unlike most other gem materials, lapis lazuli is not a mineral.Instead, it is a rock composed of multiple minerals. The blue color of lapis lazuli is mainly derived from the presence of lazurite, a blue silicate mineral of the sodalite group with a chemical composition of (Na,Ca) 8 (AlSiO 4) 6 (S,Cl,SO 4 ,OH) 2.apis lazuli forms near igneous intrusions where limestone or marble has been altered by contact metamorphism or hydrothermal metamorphism. In these rocks, lazurite replaces portions of the host rock and often preferentially develops within certain bands or layers.