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Pierre Shale, Brule Co., South Dakota, USA

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Detailed Mineral List:

Illite
Formula:	K_0.65Al_2.0[ ][Al_0.65Si,_3.35O₁₀](OH)₂
Reference:	Econ Geol (1988) 83:93-117







Kutnohorite
Formula:	Ca(Mn,Mg,Fe)(CO₃)₂
Reference:	Econ Geol (1988) 83:93-117







Manganite
Formula:	Mn³⁺O(OH)
Reference:	SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"







Pyrite
Formula:	FeS₂
Reference:	Econ Geol (1988) 83:93-117







Pyrolusite
Formula:	MnO₂
Reference:	SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"







Siderite
Formula:	FeCO₃
Reference:	SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"; Econ Geol (1988) 83:93-117

6 entries listed. 6 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in South Dakota, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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