
Ngā Pōro Uku (Pōrēhana) Kore e Mau hei kawe tautoko mō ngā whakakorikori, ngā mea mimiti, hei tātari ngota; hei whakakī i te taputapu tauhohenga, ka mahi rātou hei tohatoha i ngā matū me ngā mea whakamatao i roto i ngā ahumahi hinu me te matū; hei tinana huri mō ngā rauemi mira i roto i ngā mira pōro i te wā e huri ana, e whakaranu ana i ngā matū, ngā rongoā, ngā tae, e huri ana i ngā mata whakarewa, e huri ana i ngā rauemi mata kai i roto i te ahumahi kai. He tino iti te mimiti wai o ngā pōro (tūturu <0.1%), he ātete waikawa teitei (>99.6%), ā, he roa te ora ratonga i raro i ngā tikanga whakahaere. He mea hanga ngā pōro pōrēhana ki te porēhana silicate (alumina) mā te whakakī paura o te papatipu, te whakahāngai, te kume mā te waha, me ngā diameter mai i te 3 mm ki te 50 mm. Ka taea te hanga i ētahi atu momo hua uku i runga i tāu tono me te tohu i ngā raraunga hangarau e tika ana.
| Al2O3+SiO2 | Al2O3 | Fe2O3 | MgO | K2O+Na2O +CaO | Ētahi atu |
| > 92% | 17-23% | <1% | <0.5% | <4% | <1% |
He iti iho i te 0.1% te Fe2O3 ka taea te tātā
| Taonga | Uara |
| Te mimiti wai (%) | <0.5 |
| Te mātotorutanga papatipu (g/cm3) | 1.35-1.4 |
| Te taumaha motuhake (g/cm3) | 2.3-2.4 |
| Rōrahi kore utu (%) | 40 |
| Te pāmahana mahi (mōrahi) (℃) | 1100 |
| Te pakeke o Moh (tauine) | >6.5 |
| Ātete waikawa (%) | >99.6 |
| Ātete kawakore (%) | >85 |
| Rahi | Te kaha o te kuru | |
| Kg/matūriki | KN/matūriki | |
| 1/8 inihi (3mm) | >35 | >0.35 |
| 1/4 inihi (6mm) | >60 | >0.60 |
| 3/8 inihi (10mm) | >85 | >0.85 |
| 1/2 inihi (13mm) | >185 | >1.85 |
| 3/4 inihi (19mm) | >487 | >4.87 |
| 1 inihi (25mm) | >850 | >8.5 |
| 1-1/2 inihi (38mm) | >1200 | >12 |
| 2 inihi (50mm) | >5600 | >56 |