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The dominant green epidote in unakite rocks is the metasomatic alteration product of plagioclase feldspar, while the orthoclase and quartz crystals remain unaffected. Distribution [ edit ]
Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO 3.In its pure form (rare), it is typically a rose-red colour, [5] but it can also be shades of pink to pale brown.
An example of this is rose quartz. In Egypt, it was believed rose quartz could prevent aging, but the Romans used rose quartz as a seal to signify ownership, while in the Middle Ages it was used in healing potions, today rose quartz is known as the "love stone" and is used to balance emotions, and heal anger and disappointment. [17]
Beets come in many colors, including white and orange-gold, but the deep purple-pink kind is the most common variety. Other names for the beet include beetroot, garden beet, and red beet.
The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium result in the color variations. It has a Mohs hardness of 7 and a specific gravity of 3.3 to 3.4. Crystals show pleochroism from red to blue to violet.
The unit was first described as the Joaquin Granite by Woodward et al. in their 1974 survey of the Precambrian rocks of the southern Nacimiento Mountains.It was named for exposures in Joaquin Canyon (1] However, Karlstrom et al. referred to it as the Joaquin quartz monzonite in a review article in 2004 [3] and it is again so named in a 2015 paper by Grambling et