"Bamboo" agate occurrence, Central Java Province, Java, Indonesiai
| Regional Level Types | |
|---|---|
| "Bamboo" agate occurrence | Occurrence |
| Central Java Province | Province |
| Java | - not defined - |
| Indonesia | Country |
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| Location is approximate, estimate based on other nearby localities. | |
|---|---|
| Latitude & Longitude: | 7° South , 110° East (est.) |
| Margin of Error: | ~184km |
| Locality type: | Occurrence |
So far (2017) undivulged locality, sometimes stated by local sellers to be "near" Merapi volcano, where stalactitic chalcedony is dug for the lapidary (bead) and mineral specimen market.
Often erroneously marketed as "fossil bamboo" or chalcedony casts after a variety of marsh grasses or other wetland plant stems, although in reality they more likely represent chalcedony overgrowths of iron oxide rhizoliths.
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Standard Detailed Strunz Dana Chemical ElementsDetailed Mineral List:
| ⓘ Hematite Formula: Fe2O3 Reference: Jewel Tunnel Import specimens; PXRD by John Attard. |
| ⓘ Quartz Formula: SiO2 Reference: Jewel Tunnel Import specimens |
| ⓘ Quartz var: Chalcedony Formula: SiO2 Reference: Jewel Tunnel Import specimens |
| ⓘ 'Turgite' Reference: Jewel Tunnel Import specimens |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var: Chalcedony | 4.DA.05 | SiO2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Turgite' | - | |
List of minerals arranged by Dana 8th Edition classification
| Group 4 - SIMPLE OXIDES | |||
|---|---|---|---|
| A2X3 | |||
| ⓘ | Hematite | 4.3.1.2 | Fe2O3 |
| Group 75 - TECTOSILICATES Si Tetrahedral Frameworks | |||
| Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si | |||
| ⓘ | Quartz | 75.1.3.1 | SiO2 |
| Unclassified Minerals, Mixtures, etc. | |||
| ⓘ | var: Chalcedony | - | SiO2 |
| ⓘ | 'Turgite' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz (var: Chalcedony) | SiO2 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz (var: Chalcedony) | SiO2 |
| Si | ⓘ Quartz | SiO2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
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"Bamboo" agate occurrence, Central Java Province, Java, Indonesia