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| Bottle Label | Umber, dark |
| Chemical Name/Class | Clay with iron oxide and manganese oxide hydrate |
| Color Index Name | k.A. |
| Color Index Number | |
| Molecular Formula | |
| Company/Supplier: | |
| Source Date | |
| References: |
Eibner: Malmaterialienkunde, Verlag Springer, Berlin, A. Eibner (1909) (molecular formula):
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| Material | | Type | Pigment | | Origin | Inorganic | | Color | Brown | | Gloss | None | | Brightness | Dark | | Transparency | Opaque | | Amount | Little | | Aggregate State | Lumpy | | Sensitivity to light | No | | Toxicity | Non-toxic | | Flammability | | | Safety & Hazards | |
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Inventory number 259 (red)
