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While externally similar shapes, these two minerals are very different inside.
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Stilbite Subgroup from
Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA


Locality type:Quarry
Classification
Species:'Stilbite Subgroup' (not an IMA approved species)
Formula:M6-7[Al8-9Si27-28O72] · nH2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Calcite6
Chabazite4
Feldspar Group4
Apatite3
Heulandite Subgroup3
Pyrite3
Apophyllite Group3
Mordenite1
Prehnite1
Data
Mineral Data:Click here to view Stilbite Subgroup data
Locality Data:Click here to view Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:235828
Long-form Identifier:1:3:235828:4
GUID (UUID V4):0
Nearest other occurrences of Stilbite Subgroup
7.0km (4.4 miles) ⓘFairfax Quarry, Centreville, Culpeper Basin, Fairfax County, Virginia, USA
10.3km (6.4 miles) ⓘBull Run Quarry, Conklin, Loudoun County, Virginia, USA
17.8km (11.0 miles) ⓘChantilly Quarry, Chantilly, Loudoun County, Virginia, USA
31.6km (19.7 miles) ⓘLuck Stone Quarry (Luckstone Quarry), Bealeton, Fauquier County, Virginia, USA
32.5km (20.2 miles) ⓘStafford Quarry, Stafford County, Virginia, USA
33.4km (20.7 miles) ⓘNew Goose Creek Quarry, Leesburg, Loudoun County, Virginia, USA
33.4km (20.7 miles) ⓘOld Goose Creek Quarry, Leesburg, Loudoun County, Virginia, USA
35.0km (21.7 miles) ⓘLeesburg Quarry, Leesburg, Loudoun County, Virginia, USA
50.5km (31.4 miles) ⓘDickerson Trap Rock Quarries, Dickerson, Montgomery County, Maryland, USA
64.3km (40.0 miles) ⓘCedar Mountain Stone Corp. Quarry (A. H. Smith quarry), Mitchell, Culpeper County, Virginia, USA
References
 
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