Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UKi
Regional Level Types | |
---|---|
Kennack Cove (Kennack Sands) | Cove |
Kennack | - not defined - |
Grade-Ruan | Civil Parish |
Cornwall | County |
England | Constituent Country |
UK | Country |
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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:
Place | Population | Distance |
---|---|---|
Ruan Minor | 558 (2017) | 2.0km |
Coverack | 255 (2017) | 5.1km |
Lizard | 906 (2017) | 5.2km |
Mullion | 1,955 (2017) | 6.2km |
Gweek | 667 (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.
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Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities19 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
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Alphabetical List Tree DiagramDetailed 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 Localities: |
ⓘ 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 Localities: References: |
ⓘ 'Chlorite Group' Localities: |
ⓘ Chrysotile Formula: Mg3(Si2O5)(OH)4 Localities: |
ⓘ 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 Localities: |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 Localities: 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. References: |
ⓘ 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 Localities: |
ⓘ Sepiolite Formula: Mg4(Si6O15)(OH)2 · 6H2O Localities: |
ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 Localities: |
ⓘ 'Serpentine Subgroup var. Bastite' Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn Localities: |
ⓘ Talc Formula: Mg3Si4O10(OH)2 Localities: The Caerverracks, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK Eastern Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK Thorny Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Cornwall, England, UK 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:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Copper | 1.AA.05 | Cu |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Hetaerolite | 4.BB.10 | ZnMn2O4 |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
Group 9 - Silicates | |||
ⓘ | Chrysotile | 9.. | Mg3(Si2O5)(OH)4 |
ⓘ | Grossular | 9.AD.25 | Ca3Al2(SiO4)3 |
ⓘ | Vesuvianite var. Manganese-bearing Vesuvianite | 9.BG.35 | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
ⓘ | 9.BG.35 | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 | |
ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
ⓘ | Anthophyllite | 9.DD.05 | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
ⓘ | Saponite | 9.EC.45 | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
ⓘ | Lizardite (TL) | 9.ED.15 | Mg3(Si2O5)(OH)4 |
ⓘ | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
ⓘ | Sepiolite | 9.EE.25 | Mg4(Si6O15)(OH)2 · 6H2O |
ⓘ | Anorthite ? | 9.FA.35 | Ca(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
H | Hydrogen | |
---|---|---|
H | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
H | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
H | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
H | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
H | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
H | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
H | ⓘ Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
H | ⓘ Talc | Mg3Si4O10(OH)2 |
H | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
H | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
C | Carbon | |
C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
C | ⓘ Calcite | CaCO3 |
C | ⓘ Dolomite | CaMg(CO3)2 |
O | Oxygen | |
O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
O | ⓘ Anorthite | Ca(Al2Si2O8) |
O | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
O | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
O | ⓘ Diopside | CaMgSi2O6 |
O | ⓘ Dolomite | CaMg(CO3)2 |
O | ⓘ Grossular | Ca3Al2(SiO4)3 |
O | ⓘ Hematite | Fe2O3 |
O | ⓘ Hetaerolite | ZnMn2O4 |
O | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
O | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
O | ⓘ Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
O | ⓘ Talc | Mg3Si4O10(OH)2 |
O | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
O | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
O | ⓘ Garnet Group | X3Z2(SiO4)3 |
O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
Mg | Magnesium | |
Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Mg | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
Mg | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
Mg | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
Mg | ⓘ Diopside | CaMgSi2O6 |
Mg | ⓘ Dolomite | CaMg(CO3)2 |
Mg | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
Mg | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
Mg | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
Mg | ⓘ Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
Mg | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
Mg | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Al | Aluminium | |
Al | ⓘ Anorthite | Ca(Al2Si2O8) |
Al | ⓘ Grossular | Ca3Al2(SiO4)3 |
Al | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
Al | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
Al | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
Al | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Si | Silicon | |
Si | ⓘ Anorthite | Ca(Al2Si2O8) |
Si | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
Si | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
Si | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
Si | ⓘ Diopside | CaMgSi2O6 |
Si | ⓘ Grossular | Ca3Al2(SiO4)3 |
Si | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
Si | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
Si | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
Si | ⓘ Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
Si | ⓘ Talc | Mg3Si4O10(OH)2 |
Si | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
Si | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
S | Sulfur | |
S | ⓘ Pyrite | FeS2 |
Ca | Calcium | |
Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
Ca | ⓘ Calcite | CaCO3 |
Ca | ⓘ Diopside | CaMgSi2O6 |
Ca | ⓘ Dolomite | CaMg(CO3)2 |
Ca | ⓘ Grossular | Ca3Al2(SiO4)3 |
Ca | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
Ca | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
Ca | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
Mn | Manganese | |
Mn | ⓘ Hetaerolite | ZnMn2O4 |
Mn | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
Mn | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Fe | Iron | |
Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Fe | ⓘ Hematite | Fe2O3 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Fe | ⓘ Vesuvianite var. Manganese-bearing Vesuvianite | Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9 |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
Fe | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
Fe | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Ni | Nickel | |
Ni | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Cu | Copper | |
Cu | ⓘ Copper | Cu |
Zn | Zinc | |
Zn | ⓘ Hetaerolite | ZnMn2O4 |
Zn | ⓘ Serpentine Subgroup var. Bastite | D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn |
Geochronology
Geologic Time | Rocks, Minerals and Events | |||||||||||||||||||||
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Paleozoic | ||||||||||||||||||||||
Permian | ||||||||||||||||||||||
Guadalupian |
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Cisuralian |
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Other Databases
Wikipedia: | https://en.wikipedia.org/wiki/Kennack_Sands |
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Wikidata ID: | Q22004748 |
Localities in this Region
- England
- Cornwall
- Grade-Ruan
- Kennack
- Kennack Cove (Kennack Sands)
- Kennack
- Grade-Ruan
- Cornwall
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK
- England
- Cornwall
- Lizard ComplexComplex
- Lizard PeninsulaPeninsula
- Cornwall
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References
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