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

Locality type:Cliff
Classification
Species:Asbestos var: Mountain Leather
Comments:Mountain leather forms thin, multilayered masses at the interface between some calcite veins and the bastite serpentinite host-rock.

It is characterised as a sepia-brown, lamellar sheet, friable and slightly flexible when dry and distinctly soft and flexible when wet. The margins of the sheets exhibit occasional fringes of separated asbestiform fibres.

Composition is almost certainly within the Tremolite-Actinolite series.
Habit:Fibrous, matted. Impalpable, microscopic.
Colour:Sepia-brown, paling to greyish-white. Translucent to opaque. Becomes pale dun to white when fully dry.
Abundance at site:Rare
Special Storage/
Display Requirements:
Specimens should be treated as extremely harmful, dust arising from this material is easily absorbed into the lungs and is known to cause progressive lung disease. Should be handled only when wet and should be stored in a sealed container.
Confirmation
Validity:Believed Valid
References
References:Alysson Rowan Collection
Data
Mineral Data:Click here to view Mountain Leather data
Locality Data:Click here to view Thorny Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK
Nearest other occurrences of Mountain Leather
40.7km (25.3 miles) Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, Cornwall, England, UK
 
Mineral and/or Locality  
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