Galena streak test. The streak test is used to determine the color of a mineral in powdered form. It is done by scraping a specimen across a piece of unglazed porcelain known as a streak plate. Galena has a black streak. Galena is a mineral composed of lead sulfide (PbS) and is the main ore of lead. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Turtle Rock Scientific |
Bildgröße: | 5161 px × 3427 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |