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Clairwood quarries, Umhlatuzana valley, Durban, eThekwini District, KwaZulu-Natal, South Africai
Regional Level Types
Clairwood quarriesGroup of Quarries
Umhlatuzana valleyValley
Durban- not defined -
eThekwini DistrictDistrict
KwaZulu-NatalProvince
South AfricaCountry

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Key
Latitude & Longitude (WGS84):
29° 54' 48'' South , 30° 59' 6'' East
Latitude & Longitude (decimal):
Locality type:
Group of Quarries
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Berea15,000 (2012)6.9km
Durban3,120,282 (2012)7.5km
Mpumalanga140,121 (2013)35.4km
Tongaat Beach722 (2017)37.0km
eMkhomazi20,410 (2018)37.2km


GPS coordinates are approximate.

The Clairwood quarries complex is situated on the properties Mobeni 13538 (Subs 517, 518 and 2191), Lamont 845, in the Umhlatuzana valley. There were two quarries in the complex: one working sandstone (Natal series, Cape System) on Sub 518 (begun circa 1885, and buried beneath dumped decomposed tillite overburden during the late 1980s and early 1990s), and a deep pit in tillite (Dwyka series, Karroo System) on Sub 517, begun 1947. At depth, the tillite was intruded by a dolerite sill (Stormberg series, Karroo System). The pit on Sub 517 hosted all the minerals of interest. The quarry ceased operations in 1992, was flooded by 1994, and, at the close of the century, was being rehabilitated into a recreational area.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


31 valid minerals.

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Tschernich, R.W. (1992). Zeolites of the World. Geoscience Press Inc.: Phoenix; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden
Baryte
Formula: BaSO4
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron. H.D.C. (2004). Barite occurrences at Clairwood Quarries in Durban, Natal, South Africa. S.A. Lapidary Magazine, 36(3): 5-25.
Calcite
Formula: CaCO3
Reference: Heron, H.D.C. (1991). An occurrence of tabular calcite in a boulder at Clairwood Quarries, Durban, South Africa. The Spar Box 1(3): 5-8; Heron, H.D.C. (1995). An occurrence pf partially overgrown "sandwich" calcite crystals from a tillite fissure at Clairwood Quarries, Durban. Micro News and Views, 21(3): 4-6
Chabazite-Ca
Formula: (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Reference: Tschernich, R.W. (1992). Zeolites of the World. Geoscience Press Inc.: Phoenix; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. New analyses performed in 2004.
Chabazite-Na
Formula: (Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Reference: Tschernich, R.W. (1992). Zeolites of the World. Geoscience Press Inc.: Phoenix; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. New analyses performed in 2004.
Chantalite
Formula: CaAl2(SiO4)(OH)4
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron. H.D.C. (2004). Barite occurrences at Clairwood Quarries in Durban, Natal, South Africa. S.A. Lapidary Magazine, 36(3): 5-25.
Dickite
Formula: Al2(Si2O5)(OH)4
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron. H.D.C. (2004). Barite occurrences at Clairwood Quarries in Durban, Natal, South Africa. S.A. Lapidary Magazine, 36(3): 5-25.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Heron, H.D.C. (1991). A psilomelane-bearing assemblage from Clairwood Quarries, Durban. Micro News and Views, 17(4): 1-4 and 18(1): 1-4.
Ferricopiapite
Formula: Fe5(SO4)6O(OH) · 20H2O
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. (1994). Siderite assemblages from Clairwood Quarries, Durban, Natal. Micro News and Views, 20(2): 3-7.
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Fluorapophyllite-(K)
Formula: KCa4(Si8O20)(F,OH) · 8H2O
Reference: Heron, H.D.C. (1985). Identification of Clairwood apophyllite as fluorapophyllite. Micro News and Views, 12(1); Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. (1996). The occurrence of apophyllite at five KwaZulu-Natal localities. Micro News and Views, 23(1): 3-6.
Fluorite
Formula: CaF2
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Goethite
Formula: α-Fe3+O(OH)
Reference: Heron, H.D.C. (1994). Siderite assemblages from Clairwood Quarries, Durban, Natal. Micro News and Views, 20(2): 3-7; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. (2001). Gypsum occurrences in four tillite quarries of coastal Natal. Micro News and Views, 27(2): 11-15.
Halotrichite
Formula: FeAl2(SO4)4 · 22H2O
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Heulandite-Ca
Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: Tschernich, R.W. (1992). Zeolites of the World. Geoscience Press Inc.: Phoenix; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. New analyses performed in 2004.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Heron, H.D.C. (1991). A psilomelane-bearing assemblage from Clairwood Quarries, Durban. Micro News and Views, 17(4): 1-4 and 18(1): 1-4.
'Manganese Oxides'
Reference: Heron, H.D.C. (1990/1991). A note on manganese dendrite and oxide masses from selected Natal localities. Micro News and Views, 17(1): 2-6, 17(2): 2-4
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Reference: Heron, H.D.C. (1992). Clairwood Quarries update. Micro News and Views, 18(3).
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Heron, H.D.C., pers. commun.
Muscovite var: Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Reference: Heron, H.D.C., pers. commun.
Nacrite
Formula: Al2(Si2O5)(OH)4
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Phillipsite-Na
Formula: (Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Reference: Tschernich, R.W. (1992). Zeolites of the World. Geoscience Press Inc.: Phoenix; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron, H.D.C. New analyses performed in 2004.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Pyrite
Formula: FeS2
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Quartz
Formula: SiO2
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Romanèchite
Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10
Reference: Heron, H.D.C. (1992). Clairwood Quarries update. Micro News and Views, 18(3).
Saponite ?
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Description: Has yet to be verified
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden
Siderite
Formula: FeCO3
Reference: Heron, H.D.C. (1994). Siderite assemblages from Clairwood Quarries, Durban, Natal. Micro News and Views, 20(2): 3-7; Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden.
Truscottite
Formula: (Ca,Mn)14Si24O58(OH)8 · 2H2O
Reference: Cairncross, B. & Dixon, R. (1995). Minerals of South Africa. Geological Society of South Africa: Linden; Heron. H.D.C. (2004). Barite occurrences at Clairwood Quarries in Durban, Natal, South Africa. S.A. Lapidary Magazine, 36(3): 5-25.
Zircon
Formula: Zr(SiO4)
Reference: "Giorgio Bortolozzi (visual identification)" photo ID 748100

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Romanèchite4.DK.10(Ba,H2O)2(Mn4+,Mn3+)5O10
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Ferricopiapite7.DB.35Fe5(SO4)6O(OH) · 20H2O
Ferrimolybdite7.GB.30Fe2(MoO4)3 · nH2O
Gypsum7.CD.40CaSO4 · 2H2O
Halotrichite7.CB.85FeAl2(SO4)4 · 22H2O
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Group 9 - Silicates
Analcime9.GB.05Na(AlSi2O6) · H2O
Chabazite-Ca9.GD.10(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Chabazite-Na9.GD.10(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Chantalite9.AG.55CaAl2(SiO4)(OH)4
Dickite9.ED.05Al2(Si2O5)(OH)4
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorapophyllite-(K)9.EA.15KCa4(Si8O20)(F,OH) · 8H2O
Heulandite-Ca9.GE.05(Ca,Na)5(Si27Al9)O72 · 26H2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Montmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Illite9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
Nacrite9.ED.05Al2(Si2O5)(OH)4
Phillipsite-Na9.GC.10(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Saponite ?9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Truscottite9.EE.35(Ca,Mn)14Si24O58(OH)8 · 2H2O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB8X16
Romanèchite7.9.2.1(Ba,H2O)2(Mn4+,Mn3+)5O10
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
AB2(XO4)4·H2O
Halotrichite29.7.3.2FeAl2(SO4)4 · 22H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Ferricopiapite31.10.5.4Fe5(SO4)6O(OH) · 20H2O
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Hydrated Normal Molybdates and Tungstates
Ferrimolybdite49.2.1.1Fe2(MoO4)3 · nH2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Dickite71.1.1.1Al2(Si2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
var: Illite71.2.2d.2K0.65Al2.0[Al0.65Si3.35O10](OH)2
Sheets of 6-membered rings with 2:1 clays
Montmorillonite71.3.1a.2(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Saponite ?71.3.1b.2Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings
Fluorapophyllite-(K)72.3.1.1KCa4(Si8O20)(F,OH) · 8H2O
Group 73 - PHYLLOSILICATES Condensed Tetrahedral Sheets
Condensed Tetrahedral Sheets with double and single layers
Truscottite73.2.2a.2(Ca,Mn)14Si24O58(OH)8 · 2H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Chabazite-Ca77.1.2.1(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Heulandite-Ca77.1.4.1(Ca,Na)5(Si27Al9)O72 · 26H2O
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Group 78 - Unclassified Silicates
Miscellaneous
Chantalite78.1.2.1CaAl2(SiO4)(OH)4
Unclassified Minerals, Mixtures, etc.
Chabazite-Na-(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-
Nacrite-Al2(Si2O5)(OH)4
Phillipsite-Na-(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O

List of minerals for each chemical element

HHydrogen
H AnalcimeNa(AlSi2O6) · H2O
H ChantaliteCaAl2(SiO4)(OH)4
H DickiteAl2(Si2O5)(OH)4
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H FerricopiapiteFe5(SO4)6O(OH) · 20H2O
H Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H HalotrichiteFeAl2(SO4)4 · 22H2O
H JarositeKFe3+ 3(SO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H LaumontiteCaAl2Si4O12 · 4H2O
H NacriteAl2(Si2O5)(OH)4
H PrehniteCa2Al2Si3O10(OH)2
H Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
H FerrimolybditeFe2(MoO4)3 · nH2O
H Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
H Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
H Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
H Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
H Limonite(Fe,O,OH,H2O)
H Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
H Phillipsite-Na(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
H Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
H MuscoviteKAl2(AlSi3O10)(OH)2
H SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CCarbon
C CalciteCaCO3
C SideriteFeCO3
OOxygen
O AnalcimeNa(AlSi2O6) · H2O
O BaryteBaSO4
O CalciteCaCO3
O ChantaliteCaAl2(SiO4)(OH)4
O DickiteAl2(Si2O5)(OH)4
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O FerricopiapiteFe5(SO4)6O(OH) · 20H2O
O Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O HalotrichiteFeAl2(SO4)4 · 22H2O
O JarositeKFe3+ 3(SO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O LaumontiteCaAl2Si4O12 · 4H2O
O NacriteAl2(Si2O5)(OH)4
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O SideriteFeCO3
O Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
O FerrimolybditeFe2(MoO4)3 · nH2O
O Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
O Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
O Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
O Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
O Limonite(Fe,O,OH,H2O)
O Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
O Phillipsite-Na(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
O Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
O ZirconZr(SiO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
FFluorine
F Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
F FluoriteCaF2
NaSodium
Na AnalcimeNa(AlSi2O6) · H2O
Na Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Na Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Na Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Na Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Na Phillipsite-Na(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Na SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mg Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Mg Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mg SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Al AnalcimeNa(AlSi2O6) · H2O
Al ChantaliteCaAl2(SiO4)(OH)4
Al DickiteAl2(Si2O5)(OH)4
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al HalotrichiteFeAl2(SO4)4 · 22H2O
Al KaoliniteAl2(Si2O5)(OH)4
Al LaumontiteCaAl2Si4O12 · 4H2O
Al NacriteAl2(Si2O5)(OH)4
Al PrehniteCa2Al2Si3O10(OH)2
Al Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Al Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Al Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Al Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Al Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Al Phillipsite-Na(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Si AnalcimeNa(AlSi2O6) · H2O
Si ChantaliteCaAl2(SiO4)(OH)4
Si DickiteAl2(Si2O5)(OH)4
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Si KaoliniteAl2(Si2O5)(OH)4
Si LaumontiteCaAl2Si4O12 · 4H2O
Si NacriteAl2(Si2O5)(OH)4
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Si Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Si Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Si Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Si Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Si Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Si Phillipsite-Na(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Si ZirconZr(SiO4)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SSulfur
S BaryteBaSO4
S FerricopiapiteFe5(SO4)6O(OH) · 20H2O
S GypsumCaSO4 · 2H2O
S HalotrichiteFeAl2(SO4)4 · 22H2O
S JarositeKFe3+ 3(SO4)2(OH)6
S PyriteFeS2
KPotassium
K Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
K JarositeKFe3+ 3(SO4)2(OH)6
K Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
K Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
K Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca ChantaliteCaAl2(SiO4)(OH)4
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Ca FluoriteCaF2
Ca GypsumCaSO4 · 2H2O
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca PrehniteCa2Al2Si3O10(OH)2
Ca Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Ca Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Ca Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
Ca Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Ca Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Ca SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MnManganese
Mn Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe FerricopiapiteFe5(SO4)6O(OH) · 20H2O
Fe Goethiteα-Fe3+O(OH)
Fe HalotrichiteFeAl2(SO4)4 · 22H2O
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe PyriteFeS2
Fe SideriteFeCO3
Fe FerrimolybditeFe2(MoO4)3 · nH2O
Fe Limonite(Fe,O,OH,H2O)
Fe SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SrStrontium
Sr Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
ZrZirconium
Zr ZirconZr(SiO4)
MoMolybdenum
Mo FerrimolybditeFe2(MoO4)3 · nH2O
BaBarium
Ba BaryteBaSO4
Ba Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Heron, H.D.C. (1985) Identification of Clairwood apophyllite as fluorapophyllite. Micro News and Views, 12(1).
Heron, H.D.C. (1990/1991) A note on manganese dendrite and oxide masses from selected Natal localities. Micro News and Views, 17(1): 2-6, 17(2): 2-4.
Heron, H.D.C. (1991) A psilomelane-bearing assemblage from Clairwood Quarries, Durban. Micro News and Views, 17(4): 1-4 and 18(1): 1-4.
Heron, H.D.C. (1991) An occurrence of tabular calcite in a boulder at Clairwood Quarries, Durban, South Africa. The Spar Box 1(3): 5-8. [Reprinted in Micro News and Views, 24(4): 18-20 (1997).]
Heron, H.D.C. (1992) Clairwood Quarries update. Micro News and Views, 18(3).
Tschernich, R.W. (1992) Zeolites of the World. Geoscience Press Inc.: Phoenix
Heron, H.D.C. (1994) Siderite assemblages from Clairwood Quarries, Durban, Natal. Micro News and Views, 20(2): 3-7.
Cairncross, B. and Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa: Linden.
Heron, H.D.C. (1995) An occurrence of partially overgrown "sandwich" calcite crystals from a tillite fissure at Clairwood Quarries, Durban. Micro News and Views, 21(3): 4-6.
Heron, H.D.C. (1996) The occurrence of apophyllite at five KwaZulu-Natal localities. Micro News and Views, 23(1): 3-6.
Heron, H.D.C. (2001) Gypsum occurrences in four tillite quarries of coastal Natal. Micro News and Views, 27(2): 11-15. [Reprinted in S.A. Lapidary Magazine, 33(2): 11-18 (2001).]
Heron. H.D.C. (2004) Barite occurrences at Clairwood Quarries in Durban, Natal, South Africa. S.A. Lapidary Magazine, 36(3): 5-25.


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