Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Thaumasite from
Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA


09710140017272038916082.jpg
Thaumasite

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
02851300017361091537386.jpg
Thaumasite, etc.

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
03609780017370282759340.jpg
Thaumasite, etc.

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
01237760017370282759021.jpg
Thaumasite

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
05667510017370282755334.jpg
Thaumasite

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
00099440017370282761768.jpg
Thaumasite, etc.

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
03609780017370282759340.jpg
Thaumasite, etc.

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
01237760017370282759021.jpg
Thaumasite

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
09710140017272038916082.jpg
Thaumasite

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
02851300017361091537386.jpg
Thaumasite, etc.

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
06648120017370282762790.jpg
Thaumasite, etc.

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
04920120017370282762377.jpg
Thaumasite

Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
Locality type:Quarry
Classification
Species:Thaumasite
Formula:Ca3(SO4)[Si(OH)6](CO3) · 12H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Pumpellyite Subgroup2
Data
Mineral Data:Click here to view Thaumasite data
Locality Data:Click here to view Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:370683
Long-form Identifier:1:3:370683:1
GUID (UUID V4):0
Nearest other occurrences of Thaumasite
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
11.5km (7.2 miles) ⓘCentreville, Culpeper Basin, Fairfax County, Virginia, USA
17.5km (10.9 miles) ⓘVirginia Crushed Stone Quarry, Loudoun County, Virginia, USA
33.4km (20.7 miles) ⓘOld Goose Creek Quarry, Leesburg, Loudoun County, Virginia, USA
References
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey.
 
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