TrekGEO > Mineral Trail > Koshinetsu region > Niigata pref. > Siderite

Japanese page


Mikawa Mine

Araya, Aga city, Higashi-Kambara county, Niigata pref., Japan


Field of view: 30 mm. Siderite crystals. The brown rhombohedral crystals are siderite. The white basement is gangue quartz.

Recovered from an open space of a quartz vein in a moderate-temperature hydrothermal deposit associated with rhyolite. Formed in the early Miocene (21 Ma).

Siderite from this location was described in 1947.


Field of view: 10 mm. Siderite globules. The brown globules are groups of siderite crystals. The white basement is gangue quartz.


Field of view: 20 mm. Siderite associated with magnesite. The hexagonal tabular transparent brown crystals are siderite. The rhombohedral translucent white crystals under siderite are magnesite. The opaque white host is gangue quartz.

Other localities

Copyright (c) 2017 NariNari, All Rights Reserved.