natrophilite

{{Infobox mineral

| name = Natrophilite

| image = Natrophilite-Lithiophilite-200020.jpg

| alt =

| caption = Natrophilite, as thin coatings and fracture fillings, from Branchville, Redding, Fairfield County, Connecticut, US

| category = Phosphate mineral

| formula = NaMnPO₄

| IMAsymbol = Ntp{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|journal=Mineralogical Magazine|volume=85|issue=3 |pages=291–320|doi=10.1180/mgm.2021.43 |bibcode=2021MinM...85..291W |s2cid=235729616 |doi-access=free}}

| molweight =

| strunz = 8.AB.10

| system = Orthorhombic

| class = Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)

| symmetry = Pnam

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| color = Deep yellow to light yellow

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| cleavage = Distinct/ good

| fracture = Irregular/ uneven

| tenacity = Brittle

| mohs = {{frac|4|1|2}} – 5

| luster = Sub-vitreous, greasy

| streak = White

| diaphaneity = Transparent, translucent

| gravity = 3.41 g/cm³

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Natrophilite is a mineral with the chemical formula NaMnPO₄. In a pure form it has a yellow coloration. Its crystals are orthorhombic to dipyramidal. It is transparent to translucent. It is not radioactive. Natrophilite is rated 4.5 to 5 on the Mohs Scale.