Rose Quartz
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Formula:   SiO2   mineral photo

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Crystal:   Hexagonal  
Hardness:   7  
Spec. Gr.:   2.65  
Streak:   White  
Cleavage:   N/A  
Location:   Lavra da Ilha, Itaobim, Minas Gerais, Brazil  

Deposits of amorphous rose quartz are fairly common worldwide. Rose quartz crystals larger than a millimeter or two were unknown. Prominent author, Frederick Pough, wrote, "the failure to find large well-formed crystals of rose quartz is a geological mystery." Then in the late 1950's, a huge vug sixteen cm wide, twenty- five cm high, and over five meters long was discovered near Sapucaia do Norte in the state of Minas Gerais, Brazil. It was filled with sparkling druses of bright pink rose quartz crystals with individuals up to one cm in length. In 1970 in the Rio Jequitinhonha River in far northern Minas Gerais, an enormous deposit of rose quartz was discovered. Thousands of pretty specimens were found with many smoky quartz crystals, and numbers of the rare phosphates wardite, roscherite, and rockbridgeite. The Lavra da Ilha deposit produced nearly all of the rose quartz crystals in mineral displays today including the one in the UCSB Geology Collection.

Bibliography: Bancroft, Peter, Gem and Crystal Treasures, 1984, pg. 222-226.

University of California, Santa Barbara—Department of Earth Science
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