Pyrite streak test. The streak test is used to determine the colour of a mineral in powdered form. It is done by scraping a specimen across a piece of unglazed porcelain known as a streak plate. Pyrite (fool's gold) has a black streak. Pyrite is composed of iron disulphide (FeS2). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source / Turtle Rock Scientific |
Bildgröße: | 5167 px × 3443 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |