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Robins quarry, Robins, Linn Co., Iowa, USA

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List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
A_mB_nX_p, with (m+n):p = 1:2
Marcasite	2.12.2.1	FeS₂
Pyrite	2.12.1.1	FeS₂
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO₃)
Calcite	14.1.1.1	CaCO₃
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
Quartz	75.1.3.1	SiO₂

4 entries listed. 4 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Iowa, 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. Current server date and time: 24th May 2011 14:27:25