Penberthy Croft Mine

{{Short description|Disused mine in Cornwall, England}}

{{Use dmy dates|date=April 2022}}

{{Use British English|date=February 2023}}

{{coord|50.1414|-5.4269|display=title}}

File:Penberthy Mine - geograph.org.uk - 20333.jpg

Penberthy Croft Mine, is a disused mine and Site of Special Scientific Interest (SSSI) in Cornwall, England, UK. It is located to the north of the civil parish of St Hilary, {{convert|5|mi|km}} east of the town of Penzance.Ordnance Survey: Landranger map sheet 203 Land's End {{ISBN|978-0-319-23148-7}}

The mine was designated a SSSI in 1993, is listed as of national importance in the Geological Conservation Review and is the world type locality for bayldonite.{{cite web|title=Penberthy Croft Mine|url=https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1003620.pdf|publisher=Natural England|accessdate=29 September 2021|year=1993}}{{cite web|title=Penberthy Croft Mine (Mineralogy of South West England)|url=http://jncc.defra.gov.uk/default.aspx?page=4174&gcr=684|publisher=Joint Nature Conservation Committee|accessdate=8 November 2011}} It is noted as the most important site in Britain for secondary ore minerals of lead, copper, and arsenic and has had 40 mineral species recorded at the site.