Jingdezhen Porcelain Stone, Nangang
A standard material in Glazecalc's library: its oxide analysis, unity contribution and hazards.
What it is
- Kind
- Feldspars and stones
- Status
- Historical
- Formula
- SiO₂ 76.12%, Al₂O₃ 14.97%, CaO 1.45%, K₂O 2.77%, Na₂O 0.42%, Fe₂O₃ 0.76%, MnO 0.06%, LOI 3.71%
- Also called
- Nangang chinastone
- Similar materials
- H&G Cornwall Stone , Cornish Stone (synthetic substitute) , Cornish Stone, Synthetic (Walker BA280) , Amakusa Pottery Stone (天草陶石)
- Source
- He Z., Zhang M., Zhang H., 'Data-driven research on chemical features of Jingdezhen and Longquan celadon by energy dispersive X-ray fluorescence', arXiv:1511.07825 (2015), Table 6 (2015)
Historical: a porcelain stone (瓷石) of the Jingdezhen potteries in China; it is not sold outside China. This is one analysis, which the paper quotes from earlier Chinese studies; MgO and TiO₂ were not given. How it was mined and prepared is not in the source.
Oxide analysis and unity formula
Glazecalc has the analysis of Jingdezhen Porcelain Stone, Nangang as weight percent of the raw material. The unity contribution is the moles of each oxide in the amount of Jingdezhen Porcelain Stone, Nangang that holds 1.0 mole of flux, which is how Glazecalc adds it into a recipe's unity formula.
| Oxide | Weight % | Unity contribution |
|---|---|---|
| SiO₂ | 76.12 | 20.146 |
| Al₂O₃ | 14.97 | 2.335 |
| CaO | 1.45 | 0.411 |
| K₂O | 2.77 | 0.468 |
| Na₂O | 0.42 | 0.108 |
| Fe₂O₃ | 0.76 | 0.076 |
| MnO | 0.06 | 0.013 |
- Equivalent weight
- 1590.16
- Fired weight
- 1531.17
- Loss on ignition
- 3.71%
The equivalent weight is the grams of Jingdezhen Porcelain Stone, Nangang that hold 1.0 mole of flux. The fired weight is what is left of that after firing.
Hazards and safety
Hazards: Contains crystalline silica; avoid breathing the dust.
Use it in a recipe
Add Jingdezhen Porcelain Stone, Nangang to a recipe in the Glazecalc calculator to see what it does to a glaze's unity formula.