+-------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ | |_a._ |_b._ |_c._ |_d._ |_e._ |_f._ |_g._ |_h._ |_i._ |_k._ | +-------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ |Ferric oxide |80·76|19·4 |55·39|66·33|57·32|52·50|39·50|75·67| -- | -- | |Iron | -- | -- | -- | -- | -- | -- | -- | -- |40·90|21·69| |Manganese | | | | | | | | | | | | oxide | -- | 8·2 | -- | 6·42| -- | 5·49| 6·12| 0·72| -- | -- | |Manganese | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | |Zinc oxide | 0·92| 1·6 | -- | -- | 0·47| -- | -- | -- | -- | -- | |Alumina | 2·36|11·0 |12·80| 7·74| 1·68| 5·23| 9·89| 3·10| 4·95| 3·88| |Lime | -- | 2·6 |Trace| 0·41| 0·13| 3·36|20·34| 5·01| 5·59|21·25| |Magnesia | -- | 0·2 | -- | 0·37| -- | 0·36| -- | -- | 0·49| 0·30| |Silica |4·58 |48·61|22·73|12·97|30·64| 8·64| 5·22| 8·70|16·63|14·71| |P{2}O{5} | -- | -- | -- | -- | 0·32| 3·86| 2·19| 3·68| -- | -- | |Phosphorus | -- | -- | -- | 0·02| -- | -- | -- | -- | 1·13| 0·48| |SO{3} | -- | -- | -- | 0·03|Trace| -- | -- | -- | -- | -- | |Sulphur | -- | -- | -- | -- | -- | -- | -- | -- | 0·10| 0·05| |Loss on | | | | | | | | | | | | incineration|12·71| 9·1 | 8·50|11·77|12·70|20·55|25·74| -- |16·04|28·70| +-------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ (_a_) Oölitic (pea) ore from Elligserbrick (Brunswick); (_b_) from Durlach (Baden); (_c_) and (_d_) Ore from Esslingen; (_e_) Oölitic ore from Siptingen (Baden); (_f_) from Adenstedt, nr. Pirna (argillaceous); (_g_) _Ibid._ (calcareous); (_h_) Minette from Esch; (_i_) Red minette from Dolvaux; (_k_) Brown minette from Redange. _Limonite (Bog Iron Ore)_ +----------------+-----+-----+-----+-----+-----+-----+ | | 1. | 2. | 3. | 4. | 5. | 6. | +----------------+-----+-----+-----+-----+-----+-----+ |Ferric oxide |61·00|67·46|65·66|67·59|70·05|62·20| |Manganese oxide | 7·00| 3·19| 3·87| 1·45| 1·78| 7·60| |P{2}O{5} | 2·00| 0·67| 1·13| 0·18| 0·34| 1·60| |SO{3} -- | 3·07|Trace| 0·21|Trace|Trace| | |Silica | 6·00| 7·00| 7·15| 7·89| 8·03|16·60| |Alumina | -- | -- | 5·09| 4·18| 1·50| 2·20| |Lime | -- | 0·90| 0·82| 0·47| 2·31| 1·60| |Magnesia | -- | -- | 0·15| 0·23| 0·12| 3·73| |Water and | | | | | | | | organic acids |19·00|17·00| 6·22|17·81|15·87|19·90| +----------------+-----+-----+-----+-----+-----+-----+ (1) Limonite from Lausitz; (2) Limonite from Auer, nr. Morizburg; (3 to 6) Swedish limonite. _Ochre_