An Australian Molybdenite Specimen. There is no matrix at all. Hard to find in this size. Molybdenite is the source of molybdenum. A great addition to your metals collection. Some are using specimens like this Molybdenite Crystal as a power transistor by slight modification in the lab.
Kingsgate, NSW, Australia.
4.7cm x 3.7cm x 1.4cm, 52g.
Molybdenite is a very soft metallic mineral. It can be easily confused with graphite, but not with many other minerals. Graphite has a darker black silver color and a black to gray, brown to gray streak, whereas Molybdenite has a bluish to silver color and streak. It is soft enough to leave a mark on paper and fingers. The greasy feel is due to extreme softness. Molybdenite or “Moly Ore” as it is sometimes called, is a very high luster mineral and is an interesting mineral to add to your collection.