四国の高P/T型マンガン鉱床および鉄・マンガン鉱床産howieite-taneyamalite系鉱物  [in Japanese] Howieite and taneyamalite series minerals from the high P/T type Manganese ore deposits and iroon-manganese ore deposits in Shikoku, Japan  [in Japanese]

Howieite and taneyamalite, manganese rich analogue, were newly found from therteen manganese ore deposits and iron-manganese ore deposits in Shikoku which belongs to Mikabu belt, Northern Chichibu belt and Kurosegawa tectonic belt, and have been metamorphosed into the blueschist facies to actinolite-pumpellyite facies. Howieite and ferroan taneyamalite with greenish black in color occurs as fibrous aggregate in hematite + greenalite + riebeckite + andradite + stilpnomelane + quartz metachert. On the other hand Fe poor taneyamalite with yellowish green to yellow in color occurs as fibrous or stellate aggre-gates in braunite + caryopilite ore, associated with ganophyllite, talc and rhodochrosite. Howieite-taneyamalite series minerals contain up to 8.6wt% MgO and 4wt% Al_2O_3. YONOyama taneyamaite has the highest Mn content, and Hachi howieite is the highest Fe content.

Howieite and taneyamalite, manganese rich analogue, were newly found from therteen manganese ore deposits and iron-manganese ore deposits in Shikoku which belongs to Mikabu belt, Northern Chichibu belt and Kurosegawa tectonic belt, and have been metamorphosed into the blueschist facies to actinolite-pumpellyite facies. Howieite and ferroan taneyamalite with greenish black in color occurs as fibrous aggregate in hematite + greenalite + riebeckite + andradite + stilpnomelane + quartz metachert. On the other hand Fe poor taneyamalite with yellowish green to yellow in color occurs as fibrous or stellate aggre-gates in braunite + caryopilite ore, associated with ganophyllite, talc and rhodochrosite. Howieite-taneyamalite series minerals contain up to 8.6wt% MgO and 4wt% Al_2O_3. Yonoyama taneyamaite has the highest Mn content, and Hachi howieite is the highest Fe content.