Karnasurtite-(Ce)

karnasurtite-(Ce)

pectolite

ussingite

epididymite

Images

Formula: CeTiAlSi₂O₇(OH)₄.3H₂O
Sorosilicate (Si₂O₇ groups), cerium- and titanium- bearing mineral
Crystal System: Hexagonal
Specific gravity: 2.89 to 2.95 measured
Hardness: 2
Streak: Yellowish
Colour: Honey-yellow when fresh to pale yellow when altered
Strongly RADIOACTIVE
Environments

Pegmatites

Localities

At the type locality, Hackmanite Stock, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia, karnasurtite-(Ce) occurs in the intermediate replacement zone, composed largely of microcline, of a zoned pegmatite stock in the differentiated alkalic massif. Associated minerals include manganese-bearing pectolite, natrolite, epididymite, polylithionite and ussingite (HOM).

Karnasurtite-(Ce) from Karnasurt Mountain - Image

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