Special building
Itoigawa Jade Mines
itoigawa_mines_01The Kotakigawa River runs through the gorge at the base of Mt. Myojo and is rich in large jade deposits. These deposits produce some of the most exquisite jade in the region and beyond, delighting the eye with their vibrant green color.
Where it is
Provinces that have a slot for this building in the game's province history.
- Barony
- Kubiki
- County
- Echigo
- Duchy
- Hokurikudō
- Kingdom
- Azuma
- Built
- from 867.1.1
Levels
| Level | Cost | Time | Levies | Garrison | Main effects |
|---|---|---|---|---|---|
| 1. Itoigawa Mining Settlement | 485 gold | 1825 d | — | — | +3/month Tax, +15% Stationed Siege Weapon Effectiveness, … |
| 2. Itoigawa Mine | 725 gold | 1825 d | — | — | +5/month Tax, +23% Stationed Siege Weapon Effectiveness, … |
| 3. Large Itoigawa Mine | 1,100 gold | 1825 d | — | — | +7/month Tax, +30% Stationed Siege Weapon Effectiveness, … |
| 4. Itoigawa Mining Complex | 1,640 gold | 1825 d | — | — | +9/month Tax, +38% Stationed Siege Weapon Effectiveness, … |
Level 1: Itoigawa Mining Settlement
Province
- Tax+3/month
- Stationed Siege Weapon Effectiveness+15%
County
Holder
Province — only if: culture with Cupellation
- Holding Taxes+10%
- Key
itoigawa_mines_01- Cost
- 485 gold
- Construction
- 1,825 days (5 yrs)
- Needs
- castle, city or temple level 1
- Innovation
- Crop Rotation
Level 2: Itoigawa Mine
Province
- Tax+5/month
- Stationed Siege Weapon Effectiveness+23%
County
Holder
Province — only if: culture with Cupellation
- Holding Taxes+10%
- Key
itoigawa_mines_02- Cost
- 725 gold
- Construction
- 1,825 days (5 yrs)
- Needs
- castle, city or temple level 2
- Innovation
- Manorialism
Level 3: Large Itoigawa Mine
Province
- Tax+7/month
- Stationed Siege Weapon Effectiveness+30%
County
Holder
Province — only if: culture with Cupellation
- Holding Taxes+10%
- Key
itoigawa_mines_03- Cost
- 1,100 gold
- Construction
- 1,825 days (5 yrs)
- Needs
- castle, city or temple level 3
- Innovation
- Windmills
Level 4: Itoigawa Mining Complex
Province
- Tax+9/month
- Stationed Siege Weapon Effectiveness+38%
County
Holder
Province — only if: culture with Cupellation
- Holding Taxes+10%
- Key
itoigawa_mines_04- Cost
- 1,640 gold
- Construction
- 1,825 days (5 yrs)
- Needs
- castle, city or temple level 4
- Innovation
- Cranes
Source: game/common/buildings/00_special_mines.txt, game/common/holdings/00_holdings.txt, game/common/script_values/00_building_values.txt, game/history/provinces, game/map_data/provinces.png and the English localisation, Crusader Kings III 1.20.0.3.