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Kupreanof Island, Petersburg Borough, Alaska, USAi
Regional Level Types
Kupreanof IslandIsland
Petersburg BoroughBorough
AlaskaState
USACountry

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PhotosMapsSearchMineralogy
09404800017271921312323.jpg
Barrerite

Kupreanof Island, Petersburg Borough, Alaska, USA
03511290017272075354347.jpg
Barrerite

Kupreanof Island, Petersburg Borough, Alaska, USA
09151310017272075357400.jpg
Mordenite, etc.

Irish Creek, Kupreanof Island, Petersburg Borough, Alaska, USA
09404800017271921312323.jpg
Barrerite

Kupreanof Island, Petersburg Borough, Alaska, USA
03511290017272075354347.jpg
Barrerite

Kupreanof Island, Petersburg Borough, Alaska, USA
09151310017272075357400.jpg
Mordenite, etc.

Irish Creek, Kupreanof Island, Petersburg Borough, Alaska, USA
09404800017271921312323.jpg
Barrerite

Kupreanof Island, Petersburg Borough, Alaska, USA
03511290017272075354347.jpg
Barrerite

Kupreanof Island, Petersburg Borough, Alaska, USA
Neighbouring regions:
Little Hamilton Island, Petersburg Borough, Alaska, USA
Type:
Island
Largest Settlements:
PlacePopulation
Kake570 (2017)
Mindat Locality ID:
47271
Long-form identifier:
mindat:1:2:47271:4
GUID (UUID V4):
0
Other Languages:
View 12 more...
French:
Île Kupreanof, borough de Petersburg, Alaska, États-Unis
German:
Kupreanof-Insel, Alaska, Vereinigte Staaten
Italian:
Kupreanof Island, borough di Petersburg, Alaska, Stati Uniti d'America
Russian:
Остров Купреянова, Питерсберг, Аляска, Соединённые Штаты Америки
Simplified Chinese:
庫普列亞諾夫島, 彼得堡自治市镇, 阿拉斯加州, 美国
Spanish:
Isla de Kupreanof, Alaska, Estados Unidos
Arabic:
جزيرة كوبريانوف, ألاسكا, الولايات المتحدة
Cebuano:
Kupreanof Island, Alaska
Estonian:
Kupreanofi saar, Alaska, Ameerika Ühendriigid
Finnish:
Kupreanof Island, Petersburgin piirikunta, Alaska, Yhdysvallat
Galician:
Illa Kupreanof, Alasca, Estados Unidos de América
Greek:
Κούπριανοφ, Αλάσκα, Ηνωμένες Πολιτείες Αμερικής
Polish:
Wyspa Kuprejanowa, Okręg Petersburg, Alaska, Stany Zjednoczone
Portuguese:
Ilha Kupreanof, Alasca, Estados Unidos
Serbian:
Купрејаново острво, Аљаска, Сједињене Америчке Државе
Swedish:
Kupreanof Island, Alaska, USA
Ukrainian:
Острів Купреянова, Аляска, Сполучені Штати Америки
Urdu:
جزیرہ کورریانوف, الاسکا, ریاستہائے متحدہ امریکا


Kupreanof Island is an island in the Alexander Archipelago in southeastern Alaska. Measuring about 84 km (52 miles) long and 32 km (20 miles) wide, it has a total land area of 2,802.84 km² (1,082.18 square miles), ranking as the 13th largest island in the United States and the 170th largest worldwide. On its southeastern side, the Lindenberg Peninsula is considered part of the island, though it is separated from the main landmass by a narrow inlet known as Duncan Canal.

The island was first mapped between 1793 and 1794 by James Johnstone and Joseph Whidbey during George Vancouver’s expedition of 1791–1795. It was later named in honor of Vice Admiral Ivan Antonovich Kupreianov, who served as governor of the Russian American colonies from 1836 to 1840. The name appeared in 1848 on a Russian Hydrographic Department chart as “Os(trov) Kupreyanova.”

Kake, located on the island’s northwestern side, is its largest settlement. The only other settlement, Kupreanof, sits on the eastern side across the Wrangell Narrows from Petersburg on nearby Mitkof Island. The entire island falls within the Petersburg Ranger District of Tongass National Forest, and it also includes the Petersburg Creek–Duncan Salt Chuck Wilderness.

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.


Mineral List

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

21 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Apophyllite Group'
Formula: AB4[Si8O20]X · 8H2O
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Barrerite
Formula: Na2(Si7Al2)O18 · 6H2O
ⓘ Baryte
Formula: BaSO4
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chabazite'
ⓘ Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 10 localities in this region.
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Epistilbite
Formula: CaAl2Si6O16 · 5H2O
ⓘ Fluorapatite
Formula: Ca5(PO4)3F
ⓘ Fluorapatite var. Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
ⓘ Galena
Formula: PbS
ⓘ 'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ Laumontite
Formula: CaAl2Si4O12 · 4H2O
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Molybdenite
Formula: MoS2
ⓘ Mordenite
Formula: (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ Pyrite
Formula: FeS2
Localities: Reported from at least 16 localities in this region.
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 7 localities in this region.
ⓘ Quartz var. Agate
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS
Localities: Reported from at least 7 localities in this region.
ⓘ Stilbite-Na
Formula: Na9(Si27Al9)O72 · 28H2O

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘGalena2.CD.10PbS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz
var. Agate		4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFluorapatite
var. Carbonate-rich Fluorapatite		8.BN.05Ca5(PO4,CO3)3(F,O)
ⓘ8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘLaumontite9.GB.10CaAl2Si4O12 · 4H2O
ⓘMordenite9.GD.35(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
ⓘEpistilbite9.GD.45CaAl2Si6O16 · 5H2O
ⓘStilbite-Na9.GE.10Na9(Si27Al9)O72 · 28H2O
ⓘBarrerite9.GE.15Na2(Si7Al2)O18 · 6H2O
Unclassified
ⓘ'Apophyllite Group'-AB4[Si8O20]X · 8H2O
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chabazite'-
ⓘ'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O

List of minerals for each chemical element

HHydrogen
Hⓘ Apophyllite GroupAB4[Si8O20]X · 8H2O
Hⓘ BarreriteNa2(Si7Al2)O18 · 6H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ EpistilbiteCaAl2Si6O16 · 5H2O
Hⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Hⓘ LaumontiteCaAl2Si4O12 · 4H2O
Hⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Hⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ Quartz var. AgateSiO2
Oⓘ Apophyllite GroupAB4[Si8O20]X · 8H2O
Oⓘ BarreriteNa2(Si7Al2)O18 · 6H2O
Oⓘ BaryteBaSO4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ DolomiteCaMg(CO3)2
Oⓘ EpistilbiteCaAl2Si6O16 · 5H2O
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Oⓘ LaumontiteCaAl2Si4O12 · 4H2O
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Oⓘ QuartzSiO2
Oⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Fⓘ FluorapatiteCa5(PO4)3F
NaSodium
Naⓘ BarreriteNa2(Si7Al2)O18 · 6H2O
Naⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Naⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Naⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ BarreriteNa2(Si7Al2)O18 · 6H2O
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ EpistilbiteCaAl2Si6O16 · 5H2O
Alⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Alⓘ LaumontiteCaAl2Si4O12 · 4H2O
Alⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Alⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
SiSilicon
Siⓘ Quartz var. AgateSiO2
Siⓘ Apophyllite GroupAB4[Si8O20]X · 8H2O
Siⓘ BarreriteNa2(Si7Al2)O18 · 6H2O
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ EpistilbiteCaAl2Si6O16 · 5H2O
Siⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Siⓘ LaumontiteCaAl2Si4O12 · 4H2O
Siⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Siⓘ QuartzSiO2
Siⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
PPhosphorus
Pⓘ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Pⓘ FluorapatiteCa5(PO4)3F
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ BaryteBaSO4
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ MolybdeniteMoS2
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Kⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Caⓘ DolomiteCaMg(CO3)2
Caⓘ EpistilbiteCaAl2Si6O16 · 5H2O
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Caⓘ LaumontiteCaAl2Si4O12 · 4H2O
Caⓘ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
NiNickel
Niⓘ Pentlandite(NixFey)Σ9S8
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
MoMolybdenum
Moⓘ MolybdeniteMoS2
BaBarium
Baⓘ BaryteBaSO4
PbLead
Pbⓘ GalenaPbS

Fossils

There are 61 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences61
Youngest Fossil Listed33.9 Ma (Eocene)
Oldest Fossil Listed443 Ma (Silurian)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Anthozoa
class		Animalia : Cnidaria : Anthozoa393.3 - 358.9 Ma
Devonian
Alveolites
genus		Animalia : Cnidaria : Anthozoa : Alveolitidae : Alveolites393.3 - 382.7 Ma
Devonian
Cladopora
genus		Animalia : Cnidaria : Anthozoa : Pachyporidae : Cladopora443.4 - 382.7 Ma
Paleozoic
Favosites
genus		Animalia : Cnidaria : Anthozoa : Favositidae : Favosites443.4 - 382.7 Ma
Paleozoic
Zaphrenthis
genus		Animalia : Cnidaria : Anthozoa : Zaphrentidae : Zaphrenthis393.3 - 382.7 Ma
Devonian
Orthoceras
genus		Animalia : Mollusca : Cephalopoda : Orthoceratidae : Orthoceras393.3 - 382.7 Ma
Devonian
Trachyceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Trachyceratidae : Trachyceras237 - 201.3 Ma
Mesozoic
Buchia
genus		Animalia : Mollusca : Bivalvia : Pectinida : Buchiidae : Buchia163.5 - 100.5 Ma
Mesozoic
Halobia
genus		Animalia : Mollusca : Bivalvia : Ostreida : Halobiidae : Halobia237 - 201.3 Ma
Mesozoic
Pecten
genus		Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Pecten237 - 201.3 Ma
Mesozoic
Pseudomonotis
genus		Animalia : Mollusca : Bivalvia : Pectinida : Pseudomonotidae : Pseudomonotis237 - 228 Ma
Late/Upper Triassic
Pteria
genus		Animalia : Mollusca : Bivalvia : Ostreida : Pteriidae : Pteria163.5 - 100.5 Ma
Mesozoic
Astarte
genus		Animalia : Mollusca : Bivalvia : Carditida : Astartidae : Astarte237 - 201.3 Ma
Mesozoic
Clorinda
genus		Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clorindidae : Clorinda443.4 - 419.2 Ma
Paleozoic
Rhynchonella
genus		Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Rhynchonellidae : Rhynchonella393.3 - 100.5 Ma
Phanerozoic
Spirifer
genus		Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spiriferidae : Spirifer393.3 - 382.7 Ma
Devonian
Spiriferina
genus		Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spiriferinidae : Spiriferina237 - 228 Ma
Late/Upper Triassic
Terebratula
genus		Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Terebratulidae : Terebratula237 - 228 Ma
Late/Upper Triassic
Crinoidea
class		Animalia : Echinodermata : Crinoidea393.3 - 358.9 Ma
Devonian
Quercus
genus		Plantae : Tracheophyta : Magnoliopsida : Fagales : Fagaceae : Quercus56 - 33.9 Ma
Paleogene
Magnolia
genus		Plantae : Tracheophyta : Magnoliopsida : Magnoliales : Magnoliaceae : Magnolia56 - 33.9 Ma
Paleogene
Taxodium
genus		Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Taxodium56 - 33.9 Ma
Paleogene
Sequoia
genus		Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Sequoia56 - 33.9 Ma
Paleogene
Sequoia langsdorfii
species		Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Sequoia : Sequoia langsdorfii56 - 33.9 Ma
Paleogene
Taxites olriki
species		Plantae : Tracheophyta : Pinopsida : Taxites : Taxites olriki56 - 33.9 Ma
Paleogene
Sequoia couttsiae
species		Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Sequoia : Sequoia couttsiae56 - 33.9 Ma
Paleogene
Populus glandulifera
species		Plantae : Tracheophyta : Magnoliopsida : Malpighiales : Salicaceae : Populus : Populus glandulifera56 - 33.9 Ma
Paleogene
Populus
genus		Plantae : Tracheophyta : Magnoliopsida : Malpighiales : Salicaceae : Populus56 - 33.9 Ma
Paleogene
Populus balsamoides
species		Plantae : Tracheophyta : Magnoliopsida : Malpighiales : Salicaceae : Populus : Populus balsamoides56 - 33.9 Ma
Paleogene
Castanea
genus		Plantae : Tracheophyta : Magnoliopsida : Fagales : Fagaceae : Castanea56 - 33.9 Ma
Paleogene
Dryophyllum
genus		Plantae : Tracheophyta : Magnoliopsida : Fagales : Juglandaceae : Dryophyllum56 - 33.9 Ma
Paleogene
Ulmus
genus		Plantae : Tracheophyta : Magnoliopsida : Rosales : Ulmaceae : Ulmus56 - 33.9 Ma
Paleogene
Laurus
genus		Plantae : Tracheophyta : Magnoliopsida : Laurales : Lauraceae : Laurus56 - 33.9 Ma
Paleogene
Modiolus
genus		Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : Modiolus237 - 228 Ma
Late/Upper Triassic
Vitis
genus		Plantae : Tracheophyta : Magnoliopsida : Vitales : Vitaceae : Vitis56 - 33.9 Ma
Paleogene
Daxatina canadensis
species		Animalia : Mollusca : Cephalopoda : Ceratitida : Trachyceratidae : Daxatina : Daxatina canadensis237 - 201.3 Ma
Mesozoic
Dioon
genus		Plantae : Cycadophyta : Cycadopsida : Dioales : Dioaceae : Dioon56 - 33.9 Ma
Paleogene
Pteris
genus		Plantae : Tracheophyta : Polypodiopsida : Polypodiales : Pteridaceae : Pteris56 - 33.9 Ma
Paleogene
Castalia
genus		Animalia : Mollusca : Bivalvia : Unionida : Hyriidae : Castalia56 - 33.9 Ma
Paleogene
Halobia superba
species		Animalia : Mollusca : Bivalvia : Ostreida : Halobiidae : Halobia : Halobia superba237 - 228 Ma
Late/Upper Triassic
Fossil LocalitiesClick to show 11 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Kupreanof_Island
Wikidata ID:Q1633928
GeoNames ID:5554772

Localities in this Region

USA
USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate
USA

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

rruff-2.geo.arizona.edu (n.d.) https://rruff-2.geo.arizona.edu/uploads/CM35_691.pdf
Di Renzo, Francesco, Gabelica, Zelimir (1997) Barrerite and other zeolites from Kuiu and Kupreanof Islands, Alaska. The Canadian Mineralogist, 35 (3) 691-698
Grantham, P.A. (2000) Kupreanof Island Analysis. United States Department of Agriculture. Forest Service, Alaska Region.
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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