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Alexander Dam, Kauai Island, Kauai Co., Hawaii, USAi
Regional Level Types
Alexander DamDam
Kauai IslandIsland
Kauai Co.County
HawaiiState
USACountry

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Key
Latitude & Longitude (WGS84):
21° 57' 26'' North , 159° 31' 32'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Kalāheo4,595 (2017)3.7km
Lawai2,363 (2016)4.6km
‘Ōma‘o1,301 (2015)5.2km
Koloa2,144 (2017)8.0km
Hanapēpē Heights2,692 (2013)8.0km


Ankaratrite rock (a melanocratic basalt variety intermediate between limburgite and nepheline basalt) exposed during excavations for dam construction.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 valid minerals.

Detailed Mineral List:

Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
Aragonite
Formula: CaCO3
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
Forsterite
Formula: Mg2SiO4
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
'Gismondine'
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
Gismondine-Ca
Formula: CaAl2Si2O8 · 4H2O
Reference: Handbook of Mineralogy
'Hydronephelite'
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
Nepheline ?
Formula: Na3K(Al4Si4O16)
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.
'Stilbite subgroup'
Reference: Dunham, K.C. (1933) The American Mineralogist, 18, 369-385.

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Group 9 - Silicates
Allophane9.ED.20(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Forsterite9.AC.05Mg2SiO4
'Gismondine'9..
Gismondine-Ca9.GC.05CaAl2Si2O8 · 4H2O
Nepheline ?9.FA.05Na3K(Al4Si4O16)
Unclassified Minerals, Rocks, etc.
'Hydronephelite'-
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Allophane71.1.5.1(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework Feldspathoids and related species
Nepheline ?76.2.1.2Na3K(Al4Si4O16)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
'Gismondine'77.1.3.1
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
Gismondine-Ca-CaAl2Si2O8 · 4H2O
'Hydronephelite'-
'Stilbite subgroup'-

List of minerals for each chemical element

HHydrogen
H Gismondine-CaCaAl2Si2O8 · 4H2O
H Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
CCarbon
C AragoniteCaCO3
OOxygen
O Gismondine-CaCaAl2Si2O8 · 4H2O
O ForsteriteMg2SiO4
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
O AragoniteCaCO3
O NephelineNa3K(Al4Si4O16)
NaSodium
Na NephelineNa3K(Al4Si4O16)
MgMagnesium
Mg ForsteriteMg2SiO4
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al Gismondine-CaCaAl2Si2O8 · 4H2O
Al Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Al NephelineNa3K(Al4Si4O16)
SiSilicon
Si Gismondine-CaCaAl2Si2O8 · 4H2O
Si ForsteriteMg2SiO4
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Si NephelineNa3K(Al4Si4O16)
KPotassium
K NephelineNa3K(Al4Si4O16)
CaCalcium
Ca Gismondine-CaCaAl2Si2O8 · 4H2O
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca AragoniteCaCO3
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6

Other Regions, Features and Areas containg this locality

Pacific PlateTectonic Plate

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