The article considers a chemical variation of accessory and ore-forming chrome spinels from the Kraka ultramafic massif at the different scales. from the deposit to the thin section. A correlation analysis of compositional and structural features of ultramafic rocks and ores was performed. The ultramafic rocks and chromitites in the studied massif show the distinct deformation structu... https://www.marcelovicente.com/product-category/styptic-pencil/