NaHPO
Nahpoite is extremely rare at MSH. It is difficult to distinguish from dorfmanite, halite, thermonatrite or trona.
PHYSICAL CHARACTERISTICS:
Color is usually white.
Luster is earthy.
Diaphaneity is opaque.
Crystal System is monoclinic; or
Crystal Habits include powdery masses.
Cleavage (??).
Fracture is (??).
Hardness is (??).
Specific Gravity is approximately 2.6 g/cm
Streak is white.
Associated Minerals include aegirine, eudialyte, dorfmanite,
natrolite, pectolite, quartz, sodalite and villiaumite.
Distinguishing Features: none from other powdery material.
Origin: Named in 1981 for its composition: sodium, hydrogen,
phosphorus and oxygen (Na+H+P+O+ite).
CLASSIFICATION:
Dana System
# 37.1.5.1
Strunz Classification
# VII/A.03-10
REFERENCES:
MinRec 21:324 (1990), Dana 8:699 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH
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