The composition of chromite is (Mg,Fe) Cr2O4, and it is an important chromium ore mineral. It contains 76.91% Cr2O3, and it has an isometric crystal system. The crystals are octahedral and always appear as blocky, granular or nodular aggregates. The colour is black or brownish black with dark brown streaks. It has an opaque diaphaneity, a metallic lustre, a specific gravity of 4.5–4.8, a Mohs hardness of 5.5 and uneven fractures. It usually forms in magmatic rocks, especially ultramafic and mafic rocks. Sand placer deposits also often contain chromite.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this entry
Cite this entry
(2020). Chromite. In: Chen, A., Ng, Y., Zhang, E., Tian, M. (eds) Dictionary of Geotourism. Springer, Singapore. https://doi.org/10.1007/978-981-13-2538-0_319
Download citation
DOI: https://doi.org/10.1007/978-981-13-2538-0_319
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-2537-3
Online ISBN: 978-981-13-2538-0
eBook Packages: Earth and Environmental ScienceReference Module Physical and Materials ScienceReference Module Earth and Environmental Sciences