A series of lamproite occurences in the area NE of Rock Springs - except for Pilot Butte, which is West of Rock Springs.
Lamproites are ultrapotassic volcanic rocks, and form cinder cones, lava flows, volcanic necks... The outcrops consist of hills (the Leucite Hills) due to differential erosion.
Due to the extremely high potassium content of the lamproites, some have been mined for fertilizer (e.g., Zirkel Mesa), and most are still considered mining prospects for potassium.
Lamproites can contain rare minerals enriched in K, Ti (fluoro-potassicrichterite, priderite, shcherbakovite...)
Ref: Mitchell R.H. & Bergman S.C. (1991) Petrology of Lamproites, Plenum Press, New-York, 447 pp.
Mirnejad H. & Bell K. (2006) Origin and Source Evolution of the Leucite Hills Lamproites: Evidence from Sr–Nd–Pb–O Isotopic Compositions. Journal of Petrology 47: 2463-2489.
Mineral list contains entries from the region specified including sub-localitiesMineral List:81 entries listed. 21 valid minerals.
Localities in this Region:
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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