Borgarbyggð (Icelandic pronunciation: [ˈpɔrkarˌpɪɣθ]) is a municipality in the west of Iceland.

The biggest township in the municipality is Borgarnes. Other densely populated areas in the municipality include Bifröst, Hvanneyri, Kleppjárnsreykir [ˈkʰlɛhpˌjaur̥sˌreiːcɪr̥], Reykholt and Varmaland.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

12 valid minerals.

Detailed Mineral List:

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

Locality: Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Betz, V. (1981): Famous mineral localities: Zeolites from Iceland and the Faeroes. Mineralogical Record 12 (1), 5-26

ⓘ Calcite

Formula: CaCO₃

Locality: Borgarnes, Borgarfjördur, Borgarbyggð, Western Region, Iceland

Reference: Field collected by Howard Heitner

ⓘ 'Chabazite'

Localities:

Topagata, Tunga, Hvitarsiða, Borgarbyggð, Western Region, Iceland
Quarry near Borgir, Haugar, Borgarbyggð, Western Region, Iceland
Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Betz, V. (1981): Famous mineral localities: Zeolites from Iceland and the Faeroes. Mineralogical Record 12 (1), 5-26

Cowlesite

Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

ⓘ Cowlesite

Formula: CaAl₂Si₃O₁₀ · 6H₂O

Locality: Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Betz, V. (1981): Famous mineral localities: Zeolites from Iceland and the Faeroes. Mineralogical Record 12 (1), 5-26

ⓘ Epistilbite

Formula: CaAl₂Si₆O₁₆ · 5H₂O

Locality: Topagata, Tunga, Hvitarsiða, Borgarbyggð, Western Region, Iceland

Reference: Betz, V. (1981): Famous mineral localities: Zeolites from Iceland and the Faeroes. Mineralogical Record 12 (1), 5-26

Erionite Subgroup, etc.

Svignaskarð, Borgarbyggð, Western Region, Iceland

ⓘ 'Erionite Subgroup'

Formula: M₂[Al₄Si₁₄O₃₆] · 15H₂O

Locality: Svignaskarð, Borgarbyggð, Western Region, Iceland

Reference: Personal collection of Jamison K Turnbull.

ⓘ 'Heulandite Subgroup'

Localities:

Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland
Svignaskarð Quarry, Borgarbyggð, Western Region, Iceland
Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Self collected by Jamison Turnbull

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

Locality: Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

Reference: Self collected by Jamison Turnbull

Lévyne

Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

ⓘ 'Lévyne'

Locality: Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Betz, V. (1981): Famous mineral localities: Zeolites from Iceland and the Faeroes. Mineralogical Record 12 (1), 5-26

ⓘ Lévyne-Ca

Formula: (Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O

Locality: Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Handbook of Mineralogy (http://www.handbookofmineralogy.org/pdfs/levyneca.pdf)

ⓘ Mesolite

Formula: Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O

Localities:

Svignaskarð Quarry, Borgarbyggð, Western Region, Iceland
Quarry near Borgir, Haugar, Borgarbyggð, Western Region, Iceland
Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Personally collected by Günter Frenz

Natrolite

Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

Localities:

Svignaskarð, Borgarbyggð, Western Region, Iceland
Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

Reference: Personaly collected by Jamison Turnbull

Quartz, etc.

Borgarnes, Borgarfjördur, Borgarbyggð, Western Region, Iceland

ⓘ Quartz

Formula: SiO₂

Localities:

Topagata, Tunga, Hvitarsiða, Borgarbyggð, Western Region, Iceland
Borgarnes, Borgarfjördur, Borgarbyggð, Western Region, Iceland

Reference: Betz, V. (1981): Famous mineral localities: Zeolites from Iceland and the Faeroes. Mineralogical Record 12 (1), 5-26

ⓘ Scolecite

Formula: CaAl₂Si₃O₁₀ · 3H₂O

Localities:

Svignaskarð, Borgarbyggð, Western Region, Iceland
Svignaskarð Quarry, Borgarbyggð, Western Region, Iceland

Reference: Jamison K. Turnbull collection

Stellerite

Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

ⓘ Stellerite ?

Formula: Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O

Locality: Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

Description: Not analysed, might be stilbite.

Reference: self collected by Jamison Turnbull

Stilbite Subgroup

Svignaskarð, Borgarbyggð, Western Region, Iceland

ⓘ 'Stilbite Subgroup'

Formula: M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

Localities:

Svignaskarð, Borgarbyggð, Western Region, Iceland
Húsafell, Hvitarsiða, Borgarbyggð, Western Region, Iceland
Svignaskarð Quarry, Borgarbyggð, Western Region, Iceland
Quarry near Borgir, Haugar, Borgarbyggð, Western Region, Iceland
Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland ? (more information)

Reference: Personaly collected by Jamison Turnbull

ⓘ 'Thomsonite Subgroup'

Locality: Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland

Reference: Personally collected by Günter Frenz

ⓘ Yugawaralite

Formula: CaAl₂Si₆O₁₆ · 4H₂O

Localities:

Svignaskarð, Borgarbyggð, Western Region, Iceland
Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland ? (more information)

Reference: Personal collection of Jamison K Turnbull.

Gallery:

Na₂Al₂Si₃O₁₀ · 2H₂Oⓘ Natrolite

Natrolite

Svignaskarð, Borgarbyggð, Western Region, Iceland

Natrolite

Svignaskarð, Borgarbyggð, Western Region, Iceland

Natrolite

Svignaskarð, Borgarbyggð, Western Region, Iceland

Ca₄(Si₂₈Al₈)O₇₂ · 28H₂Oⓘ Stellerite ?

Stellerite

Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

Stellerite

Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

Stellerite

Route 1 road cut, Haugar, Borgarbyggð, Western Region, Iceland

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Cowlesite	9.GG.05	CaAl₂Si₃O₁₀ · 6H₂O
ⓘ	Epistilbite	9.GD.45	CaAl₂Si₆O₁₆ · 5H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
ⓘ	Lévyne-Ca	9.GD.15	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
ⓘ	Mesolite	9.GA.05	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Scolecite	9.GA.05	CaAl₂Si₃O₁₀ · 3H₂O
ⓘ	Stellerite ?	9.GE.15	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
ⓘ	Yugawaralite	9.GB.15	CaAl₂Si₆O₁₆ · 4H₂O
Unclassified Minerals, Rocks, etc.
ⓘ	'Chabazite'	-
ⓘ	'Erionite Subgroup'	-	M₂[Al₄Si₁₄O₃₆] · 15H₂O
ⓘ	'Heulandite Subgroup'	-
ⓘ	'Lévyne'	-
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
ⓘ	'Thomsonite Subgroup'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
H	ⓘ Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O
H	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Cowlesite	CaAl₂Si₃O₁₀ · 6H₂O
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Epistilbite	CaAl₂Si₆O₁₆ · 5H₂O
H	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
H	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
H	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Quartz	SiO₂
O	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
O	ⓘ Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O
O	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Cowlesite	CaAl₂Si₃O₁₀ · 6H₂O
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Epistilbite	CaAl₂Si₆O₁₆ · 5H₂O
O	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
O	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
O	ⓘ Calcite	CaCO₃
O	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
Na	Sodium
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Na	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
Al	Aluminium
Al	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
Al	ⓘ Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O
Al	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Cowlesite	CaAl₂Si₃O₁₀ · 6H₂O
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Epistilbite	CaAl₂Si₆O₁₆ · 5H₂O
Al	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Al	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
Al	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
Si	Silicon
Si	ⓘ Quartz	SiO₂
Si	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
Si	ⓘ Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O
Si	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Cowlesite	CaAl₂Si₃O₁₀ · 6H₂O
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Epistilbite	CaAl₂Si₆O₁₆ · 5H₂O
Si	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Si	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
Si	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O
K	Potassium
K	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
Ca	Calcium
Ca	ⓘ Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O
Ca	ⓘ Scolecite	CaAl₂Si₃O₁₀ · 3H₂O
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Cowlesite	CaAl₂Si₃O₁₀ · 6H₂O
Ca	ⓘ Epistilbite	CaAl₂Si₆O₁₆ · 5H₂O
Ca	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Ca	ⓘ Lévyne-Ca	(Ca,Na₂,K₂)[Al₂Si₄O₁₂] · 6H₂O
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Stellerite	Ca₄(Si₂₈Al₈)O₇₂ · 28H₂O

Fossils

There are 1 fossil localities from the PaleoBioDB database within this region.

BETA TEST - 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.

Occurrences

Youngest Fossil Listed

5.33 Ma (Miocene)

Oldest Fossil Listed

7.25 Ma (Miocene)

Stratigraphic Units

Unit	No. Occurrences	Age
Hreðavatn–Stafholt	1	7.246 - 5.333 Ma (Miocene)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Trichoptera genus	Animalia : Arthropoda : Insecta : Diptera : Trichoceridae : *Trichoptera*	7.246 - 5.333 Ma Miocene

Fossil Localities

Click to show 1 fossil locality

Iceland

Western Region
- Borgarbyggð
  - Miocene🐚 Stafholt

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Borgarbygg%C3%B0
Wikidata ID:	Q893528
GeoNames ID:	3418080

Localities in this Region

Iceland

Western Region
- Borgarbyggð

Iceland

Western Region
- Borgarbyggð
  - Hvammur
    - Mjöadalsa
  - Hvitarsiða
    - Húsafell
    - Tunga
      - Topagata
  - Svignaskarð
  - Svignaskarð Quarry

Other Regions, Features and Areas that Intersect

Atlantic Ocean

Mid-Atlantic Ridge complexMid-Ocean Ridge

North America PlateTectonic Plate

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.

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Borgarbyggð, Western Region, IcelandiRegional Level TypesBorgarbyggðMunicipality Western RegionRegion IcelandCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Mineral List

Detailed Mineral List:

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Fossils

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Localities in this Region

Other Regions, Features and Areas that Intersect

Borgarbyggð, Western Region, Iceland i
Regional Level Types
Borgarbyggð Municipality
Western Region Region
Iceland Country