- https://data.geoscience.earth/ncl
- INSPIRE
- CommodityCodeValue
- _d5538ce0-82c0-4abe-bde1-80aa2e32def0
experimental
Entry: opal
URI: http://inspire.ec.europa.eu/codelist/CommodityCodeValue/opal
Opal is a hydrated amorphous form of silica; its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid - http://en.wikipedia.org/wiki/Opal
Core metadata
| is a | Concept |
| submitted by | Sophie Chaduteau |
| accepted on | 16 Jul 2026 11:52:52.012 |
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All metadata properties
| date accepted |
16 Jul 2026 11:52:52.012
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| date submitted |
16 Jul 2026 09:08:46.922
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| definition |
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| item class |
Concept
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| label |
opal
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| notation |
d5538ce0-82c0-4abe-bde1-80aa2e32def0
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| register |
commodity code value
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| status |
status experimental
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| submitter |
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| type |
register item
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| version info |
2
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Definition
| broader |
silica-gemstone
|
| definition |
Opal is a hydrated amorphous form of silica; its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid - http://en.wikipedia.org/wiki/Opal
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| in scheme |
Commodity Code Value
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| notation |
opal
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| pref label |
opal
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| type |
Concept
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