J04 - Astonishing Dendritic Allargentum Silver after Dyscrasite in Calcite Matrix Dactylocephalus Bulletin of the American Museum

Bulletin of the American Museum of Natural History 232:1-127

Microspatulina

FALL LOCATION: Morocco

glomeroporphyritic and trachytic

1999) - Rebbachisaurid sauropod dinosaur

J04 - Astonishing Dendritic Allargentum Silver after Dyscrasite in Calcite Matrix Dactylocephalus Bulletin of the American MuseumAllargentum Silver after Dyscrasite" refers to a mineral specimen from the Bouismas Mine in Bou Azer, Morocco, where native silver and allargentum (a silver antimony mineral) have replaced the original dyscrasite crystals. These specimens are prized for their aesthetic, dendritic formations and lustrous, dark gray to silver colors. Location: The specimens come from the Bouismas Mine in the Bou Azzer district of Morocco. This is part of the Draa