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Heulandite Subgroup from
Big Rock Quarry (3M Quarry; Arch Street Pike Quarry), Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA

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Locality type:Quarry
Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Aegirine1
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Big Rock Quarry (3M Quarry; Arch Street Pike Quarry), Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA
Data Identifiers
Mindat Occurrence Record ID:681164
Long-form Identifier:1:3:681164:8
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
2.8km (1.7 miles)ⓘGranite Mountain Quarry No. 1, Granite Mountain Area, Little Rock, Pulaski County, Arkansas, USA
20.7km (12.9 miles)ⓘGranite Mountain No. 3 Quarry, Sweet Home, Granite Mountain complex, Saline County, Arkansas, USA
57.1km (35.5 miles)ⓘUnion Carbide Christy Vanadium Mine, Magnet Cove, Hot Spring County, Arkansas, USA
59.1km (36.7 miles)ⓘJones Mill Quarry, Magnet Cove, Hot Spring County, Arkansas, USA
References
Henry Barwood - unpublished (2010)
 
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844.doi:10.2138/am-2024-9486.
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