Calcite and dolomite are very similar minerals. Both have the same hardness (H = 3), the same rhombohedral cleavage, and are found in identical geologic settings. The best way to tell one from the other is the acid test: a drop of 1 M HCl on calcite produces an instant, obvious fizz; a drop on dolomite produces slow or no obvious bubbling. Frequently, you have to use a knife point to powder a small area of dolomite to get a visible reaction to a drop of acid.
The factors that contribute to the onset of an eating disorder are complex. No single cause of eating disorders has been identified; however, known contributing risk factors include: 1  Genetic vulnerability. 2  Psychological factors.3  Socio-cultural influences.he factors that contribute to the onset of an eating disorder are complex. No single cause of eating disorders has been identified; however, known contributing risk factors include: 1  Genetic vulnerability. 2  Psychological factors. 3  Socio-cultural influences.
Many excellent reviews of environmental risk factors [ 17, 18, 28, 29 ] for eating disorders and genetic influences on eating disorders [ 14 â 16 ] exist. The interested reader is directed to those sources for comprehensive treatments of each.y definition, eating disorders are complex traits. That means that their inheritance pattern in families does not follow traditional Mendelian patterns, and that they are influenced by multiple genetic and environmental factors of small to moderate effect.