- Visiting Iceland
- Travel Information
- FAQ
- Protected Areas
- Westfjords
- Breidafjordur
- Dynjandi in Arnarfjordur
- About the area
- Access and services
- Nature
- Culture and history
- Drone use at Dynjandi
overlayDynjandi in Arnarfjordur - Flatey in Breidafjordur
- Hornstrandir
- Why is the area protected?
- Useful information
- Administration
- Hiking trails
overlayHornstrandir - Hrisey, Reykholahreppur
- Surtarbrandsgil
- Vatnsfjordur
- About the area
- Access and services
- Culture and history
- Hrafna-Flóki and Flókatóftir
- Gíslahellir
- Þingmannaheiði
overlayCulture and history - Nature and geology
- Hiking trails
overlayVatnsfjordur
overlayWestfjords - North West
- North East
- Boggvistadafjall
- Dettifoss and a row of waterfalls
- Dimmuborgir
- Public park in Glerardalur
- Reservation in Svarfadardalur
- Godafoss in Thingeyjarsveit
- Hraun in Oxnadalur
- Hverastrytur in Eyjafjordur
- Hverfjall
- Krossanesborgir
- Myvatn and Laxa
- Seljahjallagil
- Skutustadagigar
- Vatnajokull National Park
- Vestmannsvatn
overlayNorth East - West
- Andakill
- Bardarlaug, Snaefellsbaer
- Blautos and Innstavogsnes
- Breidafjordur
- Budahraun
- Einkunnir, Borgarbyggd
- Eldborg in Hnappadalur
- Geitland, Borgarbyggd
- Grabrokargigar, Borgarbyggd
- Grunnafjordur
- Hraunfossar, Borgarbyggd
- Husafellsskogur, Borgarbyggd
- Kalmanshellir
- Melrakkaey
- Stedji (Staupasteinn)
- The coast by Stapi and Hellnir
- Vatnshornsskogur, Skorradalur
- Snaefellsjokull National Park
overlayWest - Search by name
- East
- South West
- Akurey
- Alafoss, Mosfellsbaer
- Astjorn, Hafnarfjordur
- Astjorn and Asfjall, Hafnarfjordur
- Bakkatjorn, Seltjarnarnes
- Blafjoll Public Park
- Borgir, Kopavogur
- Bringur, Mosfellsdalur
- Burfell, Gardabaer
- Eldborg in Blafjoll
- Eldborg in Geitahlid
- Eldey, Reykjanesbaer
- The shore by Kasthusatjorn
- Fossvogsbakkar, Reykjavik
- Gardahraun, Gardabaer
- Galgahraun, Gardabaer
- Grotta, Seltjarnarnes
- Hamarinn, Hafnarfjordur
- Haubakkar, Reykjavik
- Hleinar, Hafnarfjordur
- Hlid, Alftanes
- Hvaleyrarlon and Hvaleyrarhofdi
- Kaldarhraun and Gjarnar
- Kasthusatjorn, Alftanes
- Laugaras, Reykjavik
- Litluborgir, Hafnarfjordur
- Raudholar, Reykjavik
- Reykjanes Public Park
- Skerjafjordur, Gardabaer
- Skerjafjordur, Kopavogur
- Stekkjarhraun, Hafnarfjordur
- Trollaborn, Lækjarbotnar
- Tungufoss, Mosfellsbaer
- Valhusahaed, Seltjarnarnes
- Varmarosar, Mosfellsbaer
- Vifilsstadavatn, Gardabaer
- Vigholar, Kopavogur
overlaySouth West - South
- Alftaversgigar
- Arnahellir in Leitahraun
- Dverghamrar
- Dyrholaey
- Fjallabak Nature Reserve
- About the nature reserve
- Access and services
- Landmannalaugar
- Reservations
- FAQ
- About the area
overlayLandmannalaugar - Outdoor activities and hiking trails
- Nature and geology
- Culture and history
overlayFjallabak Nature Reserve - Geysir Area
- Gullfoss
- About the area
- Nature and geology
- Culture and history
overlayGullfoss - Herdisarvik
- Jorundur in Lambahraun
- Kerlingarfjoll
- General information
- The protected area
- Access and services
- Outdoor activities and hiking trails
- Information
- Geology
- Mountain peaks
- Flora and Fauna
overlayInformation
overlayKerlingarfjoll - Kirkjugolf
- Oddaflod
- Pollengi and Tunguey
- Skogafoss
- About the area
- Culture and history
- Access and management
overlaySkogafoss - Surtsey
- Protection
- Research
- Mapping and surveilance
overlaySurtsey - Area in Thjorsardalur
- Vatnajokull National Park
- Videy in Thjorsa
- Thingvellir National Park
- Thjorsarver
- About the nature reserve
- Nature and geology
- History and utilization
overlayThjorsarver
overlaySouth - Mývatn and Laxá
- About Mývatn
- Visitor center
- Flora and Fauna
- Archeology and Folklore
- Geology
overlayMývatn and Laxá - National Parks
overlayProtected Areas - Westfjords
- Permits in protected areas
- Operational licence
- Photography, cinematography and drone flying
- Research permit
overlayPermits in protected areas - Drones in protected areas
- Guidelines for using drones in protected areas
- Flights in protected areas
- Apply for permit
overlayDrones in protected areas - Volunteers
- Snæfellsjökull National Park
overlayVisiting Iceland - Wildlife
- Air & Climate
- Ocean & Water
- Industry
- Chemicals
- Frequently asked questions
- Biocides
- Classification and labelling – CLP
- Cosmetics
- Detergents
- Fluorinated greenhouse gases (F-gases)
- Fuel
- Supervision, inspection and coercive measures
- Certificate for pest control
- Plant protection products
- POPs
- Certificate for professional use of plant protection products
- REACH
overlayFrequently asked questions - Biocides
- Classification and labelling
- CLP
- Classification
- Labelling
- Packaging and retention
overlayClassification and labelling - Cosmetics
- Detergents
- F-gases
- Fuel
- Plant protection products
- Authorisation
- Harmonised Risk Indicators
overlayPlant protection products - POPs
- REACH
- Fees
overlayChemicals - Frequently asked questions
- Importation of Alien Species
- ETS
overlayIndustry - Chemicals
- Circular Economy
- Waste
- Waste Management
overlayCircular Economy - The Agency
- About the EAI
- Departments
- Responsibilities
- Nature
- Wildlife
- Air & Climate
- Chemicals
- Ocean & Water
- Industry
- Circular Economy
overlayResponsibilities - Values and policy
- Act on the EAI
- Contact us
overlayThe Agency
Helgustadanama
Helgustaðanáma is an old Iceland spar mine on the property of Helgustaðir in Fjarðarbyggð which has been protected as a natural monument since 1975. Helgustaðanáma is one of the best known Iceland spar mines in the world. Iceland spar was mined there since the 16th century until the early 21st century. The English term is Iceland spar, and the crystal is named after Iceland in many other languages.
Most of the Iceland spar found in museums around the world comes from Helgustaðarnáma, and some of the biggest and clearest specimens of Iceland spar have been found in the mine. Iceland spar is a particularly transparent crystalised variety of calcite and served an important purpose in the development of various studies of the properties of light. Those studies led to important discoveries in the fields of physics, chemistry and geology in the 18th and 19th centuries. The removal of Iceland spar from the mine was common in past years but is now protected, and it is strictly forbidden to remove it.