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Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UKi
Regional Level Types
Kennack Cove (Kennack Sands)Cove
Kennack- not defined -
Grade-RuanCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
50° 0' 21'' North , 5° 9' 43'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW735166
Type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Ruan Minor558 (2017)2.0km
Coverack255 (2017)5.1km
Lizard906 (2017)5.2km
Mullion1,955 (2017)6.2km
Gweek667 (2017)10.5km
Mindat Locality ID:
191251
Long-form identifier:
mindat:1:2:191251:0
GUID (UUID V4):
35e9d516-6b5f-4a80-a6c9-8b98cf5f5af6


Kennack Sands is a beach and sand-dune system on the east coast of the Lizard Peninsula, Cornwall, England, UK.

The beach is approximately 500 metres (ca. 1,640 ft) long and backed by cliffs, Kennack Towans (sand-dune system) and Carn Kennack. Inland is the abandoned Gwendreath Quarry. The beach is used for recreation and divided into two by an outcrop of rocks called the Caerverracks. Kennack Sands has a gently sloping beach, so the beach width varies considerably with the tide. There is a rocky outcrop that splits the beach into two, so the beach may be referred to as Kennack Sands West and Kennack Sands East. The rock that splits the beaches is called Caerverracks and the hill above this Carn Kennack. There is a path that runs over Carn Kennack allowing access to the east beach which is a designated nature reserve.

It is a popular site for launching inflatables for underwater diving. Less than 400 metres (ca. 1,312 ft) offshore, the depth of water is over 16 metres (ca. 52 ft).

The nearest village is Kuggar, 1 kilometre (0.62 mi) inland. There is a car park and café on the western side of the beach, and on the road to Kuggar there are caravan and camping sites.

Pill boxes and an anti-tank wall were built on the back of the beach in case of invasion during the Second World War.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

19 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Actinolite-Tremolite Series'
Habit: Ranges from massive to frequently fine, soft, asbestiform masses lying transverse to the vein, also coarse, tough sheaves and bundles parallel to the vein. Veins vary between sub-millimetre to 150mm or more. Fibres sub-millimetre to (prossibly) in excess of 100mm.
Colour: White, pale green, olive green, blackish green
Description: It is likely, from anecdotal evidence, that most of the material from this site will tend toward the Tremolite end of the series, although Actinolite has been reported.
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Anorthite ?
Formula: Ca(Al2Si2O8)
Habit: Tabular, anhedral and space-filling. To about 10mm across.
Colour: Transparent, white.
Description: 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.
Anthophyllite
Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2
Antigorite
Formula: Mg3(Si2O5)(OH)4
Habit: Bladed, sub-parallel.
Colour: White. Pearly on broken surfaces.
Description: Found as small lenses of roughly parallel, bladed crystals associated with Mountain leather. The Antigorite lenses are uncommon at this location. Lenses to 2-3mm thick and 25mm in length. Crystals are generally aligned along the vein, and sub-parallel with the vein.
'Asbestos'
Habit: Fibrous, matted. Impalpable, microscopic.
Colour: Sepia-brown, paling to greyish-white. Translucent to opaque. Becomes pale dun to white when fully dry.
Description: 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.
'Asbestos var. Mountain Leather'
Habit: Fibrous, matted. Impalpable, microscopic.
Colour: Sepia-brown, paling to greyish-white. Translucent to opaque. Becomes pale dun to white when fully dry.
Description: 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.
Calcite
Formula: CaCO3
'Chlorite Group'
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Copper
Formula: Cu
Habit: Granular. Possibly euhedral cuboctahedra.
Colour: metallic copper red, black tarnish.
Description: Minute grains (approx 0.5mm) on surface of calcite vein, enclosed by massive, powdery talc. Presence is signalled by small amounts of localised copper stain in talc. Only one occurrence found.
Diopside
Formula: CaMgSi2O6
Description: Occurs in waterworn pebbles originating from a rodingite vein.
Dolomite
Formula: CaMg(CO3)2
'Garnet Group'
Formula: X3Z2(SiO4)3
Description: Occurs in waterworn pebbles originating from a rodingite vein.
Grossular
Formula: Ca3Al2(SiO4)3
Hematite
Formula: Fe2O3
Hetaerolite
Formula: ZnMn2O4
Lizardite (TL)
Formula: Mg3(Si2O5)(OH)4
Magnetite
Formula: Fe2+Fe3+2O4
Habit: Irregular grains and blebs within the Serpentinite, massive in fine veins. Rounded grains within the beach sand.
Colour: Black, submetallic or dull.
Description: Found as scattered grains and finely disseminated masses in the Serpentinite, sufficient to render the rock quite attractive to a neodymium magnet. Also as ramifying veinlets in pale veins of decoloured serpentinite rock. Much of the beach sand, which is quite dark, is made up of Magnetite grains which may be easily separated using a magnet. Given the evidence of Chromite in nearby locations, this may represent a member of the Chromite-Magnetite Series.
Pyrite
Formula: FeS2
Habit: Cubic; also irregular masses
Description: Small groups of Pyrite crystals associated with some calcite veins, mostly altered to goethite or limonite. Crystals to 2mm.
Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Sepiolite
Formula: Mg4(Si6O15)(OH)2 · 6H2O
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
'Serpentine Subgroup var. Bastite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Talc
Formula: Mg3Si4O10(OH)2
Habit: Radial, botyoidal. Also compact to earthy.
Colour: White, pearly. Surfaces discoloured to yellowish when exposed to seawater.
Description: Associated with saponite veins, many voids are filled with radiating masses of crystalline talc. Expansions in the veins occasionally yield an uneven, botryoidal crust of Talc covering an underlying layer of Saponite.
Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Colour: Lavender, Purple
Description: Power et al. (1997) report purple vesuvianite as a constituent of rodingite inclusions in serpentinite. A qualitative element overview by ICP-AES showed significant manganese among the trace impurities (Peter Haas).
Vesuvianite var. Manganese-bearing Vesuvianite
Formula: Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Colour: Lavender, Purple
Description: Power et al. (1997) report purple vesuvianite as a constituent of rodingite inclusions in serpentinite. A qualitative element overview by ICP-AES showed significant manganese among the trace impurities (Peter Haas).

Gallery:

Mg3(Si2O5)(OH)4 Chrysotile
Mg3Si4O10(OH)2 Talc

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Hetaerolite4.BB.10ZnMn2O4
Hematite4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 9 - Silicates
Chrysotile9..Mg3(Si2O5)(OH)4
Grossular9.AD.25Ca3Al2(SiO4)3
Vesuvianite
var. Manganese-bearing Vesuvianite
9.BG.35Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
9.BG.35Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Diopside9.DA.15CaMgSi2O6
Anthophyllite9.DD.05◻{Mg2}{Mg5}(Si8O22)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Lizardite (TL)9.ED.15Mg3(Si2O5)(OH)4
Antigorite9.ED.15Mg3(Si2O5)(OH)4
Sepiolite9.EE.25Mg4(Si6O15)(OH)2 · 6H2O
Anorthite ?9.FA.35Ca(Al2Si2O8)
Unclassified
'Asbestos
var. Mountain Leather'
-
'Garnet Group'-X3Z2(SiO4)3
'Chlorite Group'-
'Actinolite-Tremolite Series'-
'Serpentine Subgroup
var. Bastite'
-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Asbestos'-
'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
H Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
H AntigoriteMg3(Si2O5)(OH)4
H ChrysotileMg3(Si2O5)(OH)4
H LizarditeMg3(Si2O5)(OH)4
H Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
H SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
H SepioliteMg4(Si6O15)(OH)2 · 6H2O
H TalcMg3Si4O10(OH)2
H VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
H Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
C DolomiteCaMg(CO3)2
OOxygen
O AnkeriteCa(Fe2+,Mg)(CO3)2
O AnorthiteCa(Al2Si2O8)
O Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
O AntigoriteMg3(Si2O5)(OH)4
O CalciteCaCO3
O ChrysotileMg3(Si2O5)(OH)4
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O GrossularCa3Al2(SiO4)3
O HematiteFe2O3
O HetaeroliteZnMn2O4
O LizarditeMg3(Si2O5)(OH)4
O MagnetiteFe2+Fe23+O4
O Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
O SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
O SepioliteMg4(Si6O15)(OH)2 · 6H2O
O TalcMg3Si4O10(OH)2
O VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
O Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O Garnet GroupX3Z2(SiO4)3
O Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
Mg AntigoriteMg3(Si2O5)(OH)4
Mg ChrysotileMg3(Si2O5)(OH)4
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg LizarditeMg3(Si2O5)(OH)4
Mg Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Mg SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mg SepioliteMg4(Si6O15)(OH)2 · 6H2O
Mg TalcMg3Si4O10(OH)2
Mg VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Mg Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
AlAluminium
Al AnorthiteCa(Al2Si2O8)
Al GrossularCa3Al2(SiO4)3
Al Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Al SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Al VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Al Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si AnorthiteCa(Al2Si2O8)
Si Anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2
Si AntigoriteMg3(Si2O5)(OH)4
Si ChrysotileMg3(Si2O5)(OH)4
Si DiopsideCaMgSi2O6
Si GrossularCa3Al2(SiO4)3
Si LizarditeMg3(Si2O5)(OH)4
Si Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Si SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Si SepioliteMg4(Si6O15)(OH)2 · 6H2O
Si TalcMg3Si4O10(OH)2
Si VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Si Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si Garnet GroupX3Z2(SiO4)3
Si Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
S PyriteFeS2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca AnorthiteCa(Al2Si2O8)
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca GrossularCa3Al2(SiO4)3
Ca Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Ca SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Ca VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
MnManganese
Mn HetaeroliteZnMn2O4
Mn Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Mn Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe Vesuvianite var. Manganese-bearing VesuvianiteCa19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9
Fe PyriteFeS2
Fe SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Fe VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Fe Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu CopperCu
ZnZinc
Zn HetaeroliteZnMn2O4
Zn Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, England, UK

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Kennack_Sands
Wikidata ID:Q22004748

Localities in this Region

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
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