Fluorcarmoite-(BaNa)

fluorcarmoite-(BaNa)

almandine

fluorapatite

graftonite

Images

Formula: Ba☐Na₂Na₂☐CaMg₁₃Al(PO₄)₁₁(PO₃OH)F₂
Phosphate, arrojadite group, barium-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.40 measured, 3.394 calculated
Hardness: 7½
Streak: Yellow-orange
Colour: Yellow-orange
Luminescence: Not fluorescent under UV
Solubility: Insoluble in hydrochloric and nitric acid
Environments

In a river pebble

Fluorcarmoite-(BaNa) was approved in 2015 but to date (June 2023) it has been reported only from the type locality

Localities

At the type locality, Maremola Creek, Isallo, Magliolo, Savona Province, Liguria, Italy, fluorcarmoite-(BaNa) was found in a pebble of the riverbed, associated with quartz and almandine and with microscopic inclusions of fluorapatite and possible graftonite. It occurs as yellow–orange and translucent crystals in an anhedral centimetric nodule embedded in quartz (EJM 31.4.823–836).

Fluorcarmoite-(BaNa) from Maremola Creek - Image

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