| Locality type: | Deposit |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Halotrichite | 1 |
| Quartz | 1 |
| Calcite | 1 |
| Muscovite | 1 |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Graphite deposit, Hengstberg, Hafnerbach, Sankt Pölten-Land District, Lower Austria, Austria |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 941065 |
| Long-form Identifier: | 1:3:941065:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 8.1km (5.0 miles) | ⓘMarchart quarry, Rosenthal, Karlstetten, Sankt Pölten-Land District, Lower Austria, Austria |
| 9.0km (5.6 miles) | ⓘObermamau chalcedony occurrence, Karlstetten, Sankt Pölten-Land District, Lower Austria, Austria |
| 9.2km (5.7 miles) | ⓘSeebichl, Zintring, Maria Laach am Jauerling, Krems-Land District, Lower Austria, Austria |
| 10.3km (6.4 miles) | ⓘSiebenhandl quarry (Kraxnerklippe), Felbring, Maria Laach am Jauerling, Krems-Land District, Lower Austria, Austria |
| 17.2km (10.7 miles) | ⓘGranulite quarry (Asamer quarry; Wanko gravel works), Meidling, Paudorf, Krems-Land District, Lower Austria, Austria |
| 17.5km (10.9 miles) | ⓘGraphite mine, Feistritz, Raxendorf, Melk District, Lower Austria, Austria |
| 17.7km (11.0 miles) | ⓘRoad cut, Amstall, Mühldorf, Krems-Land District, Lower Austria, Austria |
| 17.9km (11.1 miles) | ⓘMarble quarry (Thalinger quarry; Hausbruch), Amstall, Mühldorf, Krems-Land District, Lower Austria, Austria |
| 18.1km (11.2 miles) | ⓘTrandorf, Mühldorf, Krems-Land District, Lower Austria, Austria |
| 18.7km (11.6 miles) | ⓘAmstall, Mühldorf, Krems-Land District, Lower Austria, Austria |
| References |
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Kolitsch, U., Löffler, E., Schillhammer, H. & Knobloch, G. (2015): 1944) Allophan, Almandin, Apatit, Calcit, Diopsid, dravitischer Turmalin, Felsőbányait, Gips, Halotrichit, Jarosit(?), Klinozoisit, Melanterit, Mikroklin, Natrojarosit, Opal, Prehnit, Rutil, Sillimanit, Skapolith, Titanit, Tremolit, V-haltiger Muskovit(?) und Zirkon vom ehemaligen Graphitbergbau Hengstberg bei Hafnerbach im Mostviertel, Niederösterreich. Pp. 254-257 in Niedermayr, G. et al. (2015): Neue Mineralfunde aus Österreich LXIV. Carinthia II, 205./125., 207-280. |
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Graphite deposit, Hengstberg, Hafnerbach, Sankt Pölten-Land District, Lower Austria, Austria