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Anorthite from
Thorny Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK

Locality type:Cliff
Classification
Species:Anorthite
Formula:Ca(Al2Si2O8)
Comments:CONFIRMATION REQUIRED

A single vein of brittle, transparent material comprising three layers:

An inner layer of an indeterminate mineral (possibly also a Feldspar) sandwiched between thin layers (<1mm thickness) of clear, white plates of Anorthite which produce a display of specular reflections from the single perfect cleavage.

In situ, this material appears as a series of brilliant, sparkling points within a shadowed vein within the Serpentinite.
Habit:Tabular, anhedral and space-filling. To about 10mm across.
Colour:Transparent, white.
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Very Rare
Confirmation
Validity:Unconfirmed/Questioned
References
References:Alysson Rowan Collection
Data
Mineral Data:Click here to view Anorthite data
Locality Data:Click here to view Thorny Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK
Nearest other occurrences of Anorthite
5.5km (3.4 miles) Coverack Cove, Coverack, St Keverne, Cornwall, England, UK
6.3km (3.9 miles) Man O'War, Landewednack, Cornwall, England, UK
8.2km (5.1 miles) Dean Quarry, St Keverne, Cornwall, England, UK
71.2km (44.2 miles) Clicker Tor Quarry, Lower Clicker, Menheniot, Cornwall, England, UK
 
Mineral and/or Locality  
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