Mineral Specimen #4289 Mordenite in Basalt
Coney Grade Site, Santa Monica Mts., Ventura Co., California
10.3 x 7.1 x 4.1 cm
The dark colored basalt of this specimen is filled with small vesicles filled with white Mordenite. There is a large area on one surface covered with Mordenite composed of tangled and matted fibrous crystals. There is also present an unidentified black material. From a very obscure location.
The specimen is in good condition with no appreciable damage.
This mineral is also found in the following galleries: Minerals From California and Nevada | Zeolites | Rare Minerals | Minerals Priced Between 25 and 49 Dollars