Kimberlite garnets rich in chromium, are generally absent from most other igneous rocks, making them particularly useful as indicators for kimberlites. These indicator minerals are generally sought in stream sediments in modern alluvial material. Their presence may indicate the presence of a kimberlite within the erosional watershed that produced the alluvium. The geochemistry of Kimberlites is defined by the following parameters: Kimberlites are the most important source of primary diamonds. Many kimberlite pipes also produce rich alluvial or eluvial diamond placer deposits. About 6,400 kimberlite pipes have been discovered in the world, of those about 900 have been classified as diamondiferous,
Latin Grammy Award for Best Rock Solo Vocal Album Latin Grammy Award for Best Rock Solo Vocal Album The Latin Grammy Award for Best Rock Solo Vocal Album was an honor presented annually at the Latin Grammy Awards, a ceremony conducted by the Latin Academy of Recording Arts & Sciences to "recognize excellence and create a wider awareness of the cultural diversity" and contributions of Latin recording artists in the United States and internationally. According to the category description guide for the 2009 Latin Grammy Awards, the award was given to vocal rock, hard rock or metal albums containing at least 51 percent of newly recorded material. It was