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USA | |
| Finch,Robert J. and Ewing, Rodney C. (1997) Clarkeite: New chemical and structural data: American Mineralogist,Vol.82,pg 607-619,1997 |
| Finch,Robert J. and Ewing,Rodney C.(1997) Clarkeite:New chemical and structural data, America Mineralogist,Vol.82 pg. 607-619,1997 |
| Finch,Robert J. and Ewing,Rodney C.(1997) Clarkeite: New chemical and structural data American Mineralogist, Vol.82, pg. 607-619,1997 |
| Finch,Robert J. and Ewing,Rodney C. (1997) Clarkeite:New chemical and structural data , American Mineralogist,Vol. 82,pg 607-619,1997 |