@misc{indiciaec5f838f48a56, title = {Microscopic determination of the nonopaque minerals}, author = {Michael Fleischer and Ray E. Wilcox and John J. Matzko}, year = {1984}, doi = {10.3133/b1627\_1984}, url = {https://pubs.usgs.gov/publication/b1627\_1984}, note = {Source identifier: b1627\_1984} }