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Kohse mine (Kouse; Kose Mine), Tenkawa village, Yoshino district, Nara Prefecture, Japani
| Regional Level Types | |
|---|---|
| Kohse mine (Kouse; Kose Mine) | Mine |
| Tenkawa village | Village |
| Yoshino district | District |
| Nara Prefecture | Prefecture |
| Japan | Country |
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Latitude & Longitude (WGS84):
34° North , 135° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~12km
Type:
Köppen climate type:
Skarn-hosted magnetite mine, now overgrown with forest. Source of the superbly iridescent "rainbow garnet" (almost end-member andradite) on the market since 2002. Collecting here is now strictly prohibited and field collectors have been arrested.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ✪ Andradite Formula: Ca3Fe3+2(SiO4)3 Habit: dodecahedra |
| ⓘ Andradite var. Rainbow Garnet Formula: Ca3Fe3+2(SiO4)3 |
| ⓘ 'Andradite-Grossular Series' |
| ⓘ 'Chlorite Group' References: |
| ⓘ Grossular Formula: Ca3Al2(SiO4)3 |
| ⓘ 'Limonite' References: |
| ⓘ Quartz Formula: SiO2 References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | Grossular | 9.AD.25 | Ca3Al2(SiO4)3 |
| ⓘ | Andradite var. Rainbow Garnet | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Andradite-Grossular Series' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| O | ⓘ Grossular | Ca3Al2(SiO4)3 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Andradite-Grossular Series | |
| O | ⓘ Andradite var. Rainbow Garnet | Ca3Fe23+(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Grossular | Ca3Al2(SiO4)3 |
| Al | ⓘ Andradite-Grossular Series | |
| Si | Silicon | |
| Si | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Grossular | Ca3Al2(SiO4)3 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Andradite-Grossular Series | |
| Si | ⓘ Andradite var. Rainbow Garnet | Ca3Fe23+(SiO4)3 |
| Ca | Calcium | |
| Ca | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Grossular | Ca3Al2(SiO4)3 |
| Ca | ⓘ Andradite-Grossular Series | |
| Ca | ⓘ Andradite var. Rainbow Garnet | Ca3Fe23+(SiO4)3 |
| Fe | Iron | |
| Fe | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Fe | ⓘ Andradite-Grossular Series | |
| Fe | ⓘ Andradite var. Rainbow Garnet | Ca3Fe23+(SiO4)3 |
Other Regions, Features and Areas containing this locality
Amur PlateTectonic Plate
AsiaContinent
Eurasian Plate
- Southern Japan ForearcAccretionary Complex
Japan
- Honshu IslandIsland
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
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for access and that you are aware of all safety precautions necessary.
References
Hainschwang, Thomas, Notari, Franck (2006) The Cause of Iridescence in Rainbow Andradite From Nara, Japan. Gems & Gemology, 42 (4). 248-258 doi:10.5741/gems.42.4.248
Kohse mine, Tenkawa village, Yoshino district, Nara Prefecture, Japan