| Locality type: | Mine |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Byrud Emerald Mines, Minnesund, Eidsvoll, Viken, Norway |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 484318 |
| Long-form Identifier: | 1:3:484318:4 |
| GUID (UUID V4): | 6649074b-14bb-46b1-b70d-77d730de88a5 |
| Nearest other occurrences of Opal |
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| 25.2km (15.7 miles) | âMidtmoen, ĂstĂ„sen, Lunner, Viken, Norway |
| 40.3km (25.1 miles) | âGjerdingselva, Lunner, Viken, Norway |
| 42.8km (26.6 miles) | âDelebekken Quarry, Nittedal, Viken, Norway |
| 50.8km (31.5 miles) | âGjellerĂ„sen, Nittedal, Viken, Norway |
| 52.4km (32.5 miles) | âKristiansen Quarry (BĂ„nkall Quarry), BĂ„nkall, Grorud, Oslo, Norway |
| 53.1km (33.0 miles) | âHuken Quarry, Grorud, Oslo, Norway |
| 81.8km (50.8 miles) | âVardĂ„sen Tunnel, Asker, Viken, Norway |
| 81.9km (50.9 miles) | âHeggedalsveien, Asker, Viken, Norway |
| 83.7km (52.0 miles) | âLierskogen Quarry, Lierskogen, Lier, Buskerud, Norway |
| 91.4km (56.8 miles) | âSauesetra, Lier, Buskerud, Norway |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | The emerald deposit at Byrud, Eidsvoll, South Norway Fred Steinar Nordrum, Kongsberg, and Gunnar Raade...occurrence of emerald has been mined, located at the Byrud farm on the shore of Lake Mj0sa near Minnesund in Eidsvoll...specimens. History The initial discovery of the emerald occurrence is not documented, but it probably took...pieces with translucent crystals of green beryl (emerald). At a later stage, the name Gustaf Nauckhoff (1847-1919)...with green, nontranslucent beryl crystals from Byrud, in which the labeis say that they were gifts to |  | | Journal (issue) | | SUMMER 2008 PAGES 107â 200 Emeralds from Byrud, Norway Modeling the Koh-i-Noor Diamond Coated Tanzanite...of Emeralds from a Historical Deposit: Byrud (Eidsvoll), Norway Benjamin Rondeau, Emmanuel Fritsch, Jean-Jacques...California âą Paragonite from Pakistan âą Unusual opal âą Engraved cultured pearls âą P. maxima pearls cultured...extracurricular activities. Field trips to the gem pegmatite mines of San Diego County, a gem photography contest and...OF EMERALDS FROM A HISTORICAL DEPOSIT: BYRUD (EIDSVOLL), NORWAY Benjamin Rondeau, Emmanuel Fritsch, Jean-Jacques |  | | Journal (issue) | | uvarovite molecule to the ugrandite series imparts an emerald-green colour in hand specimen; chrome-pyrope is...necklace found in a burial site inside the Neolithic mines of GavĂ , Spain. At Palazuelo de las Cuevas, Zamora...photomicroscopy; Josep Bosch, Curator Neolithic Mines, GavĂ , for loan of the image of the collar necklace;...Neolithic: a geological study on the variscite mines at GavĂ , Catalonia. Episodes, 26(4), 295-301 Cassen...gamma radioactivity and exploration for precious opal in Australia. The Australian Gemmologist, 23(4) |
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