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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Prehnite from
Martin Marietta Quarry (Hickory Quarry), Hickory, Catawba County, North Carolina, USA


09586470017362193727249.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
03187940017272024748621.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
03736520017272024754700.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
09586470017362193727249.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
03187940017272024748621.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
03736520017272024754700.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
09586470017362193727249.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
03187940017272024748621.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
03736520017272024754700.jpg
Prehnite, etc.

Martin Marietta Quarry, Hickory, Catawba County, North Carolina, USA
Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Comments:Nice crystals to 0.5cm, sometimes enclosed in calcite that can be removed with cold HCl acid.
Habit:Sharp stubby to acicular crystals, also rounded radiating crystals
Colour:Light green
Luminescent properties:none
Quality for species:Good crystals or rich for species - important (!)
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Confirmation Details:Where Tested and Reference ID: K. Wood
Associated Minerals Based on Photo Data:
Babingtonite4
Sphalerite1
Epidote1
Pyrite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Martin Marietta Quarry (Hickory Quarry), Hickory, Catawba County, North Carolina, USA
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:39893
Long-form Identifier:1:3:39893:2
GUID (UUID V4):0
Nearest other occurrences of Prehnite
28.1km (17.4 miles) ⓘHiddenite, Alexander County, North Carolina, USA
29.4km (18.3 miles) ⓘCaldwell Quarry (Martin Marietta Quarry), Lenoir, Caldwell County, North Carolina, USA
56.5km (35.1 miles) ⓘFoote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
63.7km (39.6 miles) ⓘWoodleaf Quarry, Woodleaf, Rowan County, North Carolina, USA
74.6km (46.3 miles) ⓘSmith Grove Quarry, Davie County, North Carolina, USA
75.7km (47.0 miles) ⓘPineville Quarry, Pineville, Mecklenburg County, North Carolina, USA
78.1km (48.5 miles) ⓘPineville Quarry, York County, South Carolina, USA
95.5km (59.4 miles) ⓘLexington Quarry, Davidson County, North Carolina, USA
References
K. Wood collection
 
and/or  
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