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Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK i
Regional Level Types
Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine) Mine
Kenidjack Valley Valley
St Just Civil Parish
Cornwall County
England Constituent Country
UK Country

Regional Level Types
Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine)	Mine
Kenidjack Valley	Valley
St Just	Civil Parish
Cornwall	County
England	Constituent Country
UK	Country

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Boswedden Lode

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Waterwheel remain

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Water wheel pit

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Boswedden Lode

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Waterwheel remain

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Water wheel pit

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Boswedden Lode

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Waterwheel remain

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Latitude & Longitude (WGS84):

50° 7' 52'' North , 5° 42' 0'' West

Latitude & Longitude (decimal):

G#: gbgvnq16u

UK National Grid Reference:

SW356323

Type:

Mine

Köppen climate type:

Cfb : Temperate oceanic climate

Nearest Settlements:

Place	Population	Distance
St Just	1,957 (2017)	1.6km
Madron	626 (2017)	9.6km
Penzance	19,872 (2017)	11.7km
Mousehole	697 (2017)	12.6km
Marazion	1,294 (2017)	16.0km

Mindat Locality ID:

1284

Long-form identifier:

mindat:1:2:1284:6

GUID (UUID V4):

No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

ⓘ Copper

ⓘ Tin

Mineral List

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

22 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

ⓘ Granite

Detailed Mineral List:

ⓘ Arsenopyrite

Formula: FeAsS

Localities:

Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK
Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

ⓘ Beryl

Formula: Be₃Al₂(Si₆O₁₈)

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford.

Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.

ⓘ Bornite

Formula: Cu₅FeS₄

Locality: Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

Habit: Massive

References:

P Haas, collected 2009

ⓘ Brochantite

Formula: Cu₄(SO₄)(OH)₆

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

De Bondt, Paul (n.d.) Personal communication.

ⓘ Calcite

Formula: CaCO₃

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Hogg, Thomas (1825) A Manual of Mineralogy - In which is shown how much Cornwall contributes to the illustration of the science. W. Polybank High Cross, Truro.

ⓘ Cassiterite

Formula: SnO₂

Localities:

Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK
Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK
Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

ⓘ Chalcocite

Formula: Cu₂S

Localities:

ⓘ Chalcopyrite

Formula: CuFeS₂

Localities:

ⓘ 'Chlorite Group'

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

P Haas, collected in 2003

ⓘ Connellite

Formula: Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O

Localities:

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Carne, J. (1822) On the Mineral Productions and the Geology of the Parish of St. Just. Transactions of the Royal Geological Society of Cornwall, 2. 290-358

Hogg, Thomas (1825) A Manual of Mineralogy - In which is shown how much Cornwall contributes to the illustration of the science. W. Polybank High Cross, Truro.

Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford.

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

Localities:

Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK
Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

ⓘ Fluorapatite var. Carbonate-rich Fluorapatite

Formula: Ca₅(PO₄,CO₃)₃(F,O)

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

De Bondt, Paul (n.d.) Personal communication.

ⓘ Goethite

Formula: Fe³⁺O(OH)

Localities:

Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK
Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

ⓘ Hematite

Formula: Fe₂O₃

Localities:

ⓘ Hematite var. Specularite

Formula: Fe₂O₃

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Haas, Peter (n.d.) Personal communication.

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca₂(Z²⁺₄Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

ⓘ 'K Feldspar'

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Carne, J. (1822) On the Mineral Productions and the Geology of the Parish of St. Just. Transactions of the Royal Geological Society of Cornwall, 2. 290-358

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi₃O₈

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Carne, J. (1822) On the Mineral Productions and the Geology of the Parish of St. Just. Transactions of the Royal Geological Society of Cornwall, 2. 290-358

ⓘ Langite

Formula: Cu₄(SO₄)(OH)₆ · 2H₂O

Localities:

ⓘ Lepidocrocite

Formula: Fe³⁺O(OH)

Locality: Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

P Haas, collected 2009

ⓘ 'Limonite'

Localities:

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

Localities:

ⓘ 'Mica Group'

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

De Bondt, Paul (n.d.) Personal communication.

ⓘ Native Copper

Formula: Cu

Locality: Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

Habit: Microscopic grains

Description: Microscopic grains in granite adjacent to copper sulphide-bearing veinlets

References:

P Haas, collected 2009

ⓘ Paratacamite ?

Formula: Cu₃(Cu,Zn)(OH)₆Cl₂

Locality: Wheal Call (Wheal Cole; Wheal Coal), Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

Habit: Bipyramidal crystals, less than 1 mm across.

Colour: Dark green

Description: Identified by visual means only. Could also be clinoatacamite.

References:

P Haas, collected 2009

ⓘ Pyrite

Formula: FeS₂

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

Carne, J. (1822) On the Mineral Productions and the Geology of the Parish of St. Just. Transactions of the Royal Geological Society of Cornwall, 2. 290-358

Reid, Clement, Flett, J. S. (1907) The Geology of the Land's End District - Memoirs of the Geological Survey. Geological Survey of Great Britain.p.101

ⓘ Quartz

Formula: SiO₂

Localities:

ⓘ Quartz var. Amethyst

Formula: SiO₂

Localities:

ⓘ Quartz var. Chalcedony

Formula: SiO₂

Localities:

Colour: tan, brownish white, lemon yellow

ⓘ Quartz var. Smoky Quartz

Formula: SiO₂

Locality: Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

References:

De Bondt, Paul (n.d.) Personal communication.

ⓘ Siderite

Formula: FeCO₃

Localities:

ⓘ Topaz

Formula: Al₂(SiO₄)(F,OH)₂

References:

Michael Merry, pers. commun.

ⓘ 'Tourmaline'

Formula: AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z

Localities:

Gallery:

Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂Oⓘ Connellite

Connellite, etc.

Wheal Castle, Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Connellite, etc.

Wheal Castle, Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Connellite, etc.

Wheal Castle, Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Fe³⁺O(OH)ⓘ Goethite

Goethite, etc.

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Goethite, etc.

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

Goethite, etc.

Boswedden Mine, Kenidjack Valley, St Just, Cornwall, England, UK

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
Group 3 - Halides
ⓘ	Paratacamite ?	3.DA.10c	Cu₃(Cu,Zn)(OH)₆Cl₂
ⓘ	Connellite	3.DA.25	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	Fe³⁺O(OH)
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	var. Specularite	4.CB.05	Fe₂O₃
ⓘ	Quartz var. Amethyst	4.DA.05	SiO₂
ⓘ	var. Chalcedony	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
ⓘ	var. Smoky Quartz	4.DA.05	SiO₂
ⓘ	Cassiterite	4.DB.05	SnO₂
ⓘ	Lepidocrocite	4.FE.15	Fe³⁺O(OH)
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Brochantite	7.BB.25	Cu₄(SO₄)(OH)₆
ⓘ	Langite	7.DD.10	Cu₄(SO₄)(OH)₆ · 2H₂O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Fluorapatite var. Carbonate-rich Fluorapatite	8.BN.05	Ca₅(PO₄,CO₃)₃(F,O)
ⓘ		8.BN.05	Ca₅(PO₄)₃F
Group 9 - Silicates
ⓘ	Topaz	9.AF.35	Al₂(SiO₄)(F,OH)₂
ⓘ	Beryl	9.CJ.05	Be₃Al₂(Si₆O₁₈)
Unclassified
ⓘ	'K Feldspar var. Adularia'	-	KAlSi₃O₈
ⓘ	'Chlorite Group'	-
ⓘ	'Limonite'	-
ⓘ	'Tourmaline'	-	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Mica Group'	-
ⓘ	'Hornblende Root Name Group'	-	◻Ca₂(Z²⁺₄Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
ⓘ	'K Feldspar'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
H	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
H	ⓘ Goethite	Fe³⁺O(OH)
H	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
H	ⓘ Lepidocrocite	Fe³⁺O(OH)
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Paratacamite	Cu₃(Cu,Zn)(OH)₆Cl₂
H	ⓘ Topaz	Al₂(SiO₄)(F,OH)₂
H	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Be	Beryllium
Be	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
B	Boron
B	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Fluorapatite var. Carbonate-rich Fluorapatite	Ca₅(PO₄,CO₃)₃(F,O)
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Siderite	FeCO₃
O	Oxygen
O	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
O	ⓘ Quartz var. Amethyst	SiO₂
O	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
O	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	ⓘ Calcite	CaCO₃
O	ⓘ Fluorapatite var. Carbonate-rich Fluorapatite	Ca₅(PO₄,CO₃)₃(F,O)
O	ⓘ Cassiterite	SnO₂
O	ⓘ Quartz var. Chalcedony	SiO₂
O	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Goethite	Fe³⁺O(OH)
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
O	ⓘ Lepidocrocite	Fe³⁺O(OH)
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Paratacamite	Cu₃(Cu,Zn)(OH)₆Cl₂
O	ⓘ Quartz	SiO₂
O	ⓘ Siderite	FeCO₃
O	ⓘ Quartz var. Smoky Quartz	SiO₂
O	ⓘ Topaz	Al₂(SiO₄)(F,OH)₂
O	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Hematite var. Specularite	Fe₂O₃
O	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
F	Fluorine
F	ⓘ Fluorapatite var. Carbonate-rich Fluorapatite	Ca₅(PO₄,CO₃)₃(F,O)
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	ⓘ Topaz	Al₂(SiO₄)(F,OH)₂
F	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Mg	Magnesium
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Al	Aluminium
Al	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Topaz	Al₂(SiO₄)(F,OH)₂
Al	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Si	Silicon
Si	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Si	ⓘ Quartz var. Amethyst	SiO₂
Si	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Si	ⓘ Quartz var. Chalcedony	SiO₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Quartz var. Smoky Quartz	SiO₂
Si	ⓘ Topaz	Al₂(SiO₄)(F,OH)₂
Si	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
P	Phosphorus
P	ⓘ Fluorapatite var. Carbonate-rich Fluorapatite	Ca₅(PO₄,CO₃)₃(F,O)
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
S	Sulfur
S	ⓘ Arsenopyrite	FeAsS
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Chalcocite	Cu₂S
S	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
S	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
S	ⓘ Pyrite	FeS₂
Cl	Chlorine
Cl	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
Cl	ⓘ Paratacamite	Cu₃(Cu,Zn)(OH)₆Cl₂
Cl	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
K	Potassium
K	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Fluorapatite var. Carbonate-rich Fluorapatite	Ca₅(PO₄,CO₃)₃(F,O)
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Fe	Iron
Fe	ⓘ Arsenopyrite	FeAsS
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Goethite	Fe³⁺O(OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Lepidocrocite	Fe³⁺O(OH)
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Siderite	FeCO₃
Fe	ⓘ Hematite var. Specularite	Fe₂O₃
Cu	Copper
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Cu	ⓘ Paratacamite	Cu₃(Cu,Zn)(OH)₆Cl₂
Zn	Zinc
Zn	ⓘ Paratacamite	Cu₃(Cu,Zn)(OH)₆Cl₂
As	Arsenic
As	ⓘ Arsenopyrite	FeAsS
Sn	Tin
Sn	ⓘ Cassiterite	SnO₂

Geochronology

Geologic Time

Rocks, Minerals and Events

ⓘ Major polymetallic mineralization

~270 Ma

Cornwall, England, UK

Cisuralian

ⓘ Porphyry dikes intruded (latest age)	~275 Ma	Cornwall, England, UK
ⓘ Greisenization (latest age)	~280 Ma	Cornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)	~280 Ma	Cornwall, England, UK
ⓘ Formation of metallized pegmatites	~285 Ma	Cornwall, England, UK
ⓘ Greisenization (earliest age)	~285 Ma	Cornwall, England, UK
ⓘ Emplacement of major plutons	~295 Ma	Cornwall, England, UK

Localities in this Region

England
- Cornwall
  - St Just
    - Kenidjack Valley
      - Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine)
        Wheal Call (Wheal Cole; Wheal Coal)
        Wheal Castle

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands

Eurasian PlateTectonic Plate

Rheno-Hercynian BeltOrogenic Belt

England
- Cornwall
  - St Just Mining DistrictMining District
  - ⭔St Just Mining RegionRegion
- Devon and Cornwall metalliferous mining districtMining District

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

www.cornwallinfocus.co.uk (n.d.) http://www.cornwallinfocus.co.uk/mining/boswedden.php

Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.pp.68-69

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