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Vivianite Concretion Locality, Riva, Anne Arundel Co., Maryland, USA

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Detailed Mineral List:
Glauconite
Formula: (K,Na)(Fe3+,Al,Mg)2(Si,Al,Fe3+)4O10)(OH)2
Reference: Barwick, Authur R. (1951) Vivianite Concretions in Aquia Formation (Middle Eocene), Anne Arundel County, Maryland, American Mineralogist, 36: 629--630.
Goethite
Formula: α-Fe3+O(OH)
Reference: Barwick, Authur R. (1951) Vivianite Concretions in Aquia Formation (Middle Eocene), Anne Arundel County, Maryland, American Mineralogist, 36: 629--630.
'Limonite'
Formula: FeO(OH) · nH2O
Reference: Barwick, Authur R. (1951) Vivianite Concretions in Aquia Formation (Middle Eocene), Anne Arundel County, Maryland, American Mineralogist, 36: 629--630.
Vivianite
Formula: Fe2+3(PO4)2 · 8H2O
Reference: Barwick, Authur R. (1951) Vivianite Concretions in Aquia Formation (Middle Eocene), Anne Arundel County, Maryland, American Mineralogist, 36: 629--630.


4 entries listed. 3 valid minerals.

References

Barwick, A. R. (1951) Vivianite concretions in the Aquia Formation (middle Eocene), Anne Arundel County, Maryland: American Mineralogist: 36 (7-8): 629-630.

Mineral and/or Locality  
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