Fluorapophyllite-(Na) is a rare member of the apophyllite group characterized by sodium dominance in its chemical structure. It typically appears as sharp, glassy, tabular to prismatic crystals in cavities within volcanic rocks and is often associated with other zeolites and related silicates.

Hardness

4.5-5

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineraluncommonApophyllite Group family

Fluorapophyllite-(Na)

Hardness: 4.5-5
Luster: Vitreous
Streak: White
Transparency: Transparent

No image

Is this fluorapophyllite-(na)?

5-step field check

Run through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.

1
Test the hardness
Try to scratch fluorapophyllite-(na) with a known reference. Fluorapophyllite-(Na) sits at Mohs 4.5-5 — softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Fluorapophyllite-(Na) leaves a white streak.
3
Read the luster
Hold the specimen under a strong light. Fluorapophyllite-(Na) typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: white, colorless, pink, yellowish.
5
Look at form & habit
Crystal system: tetragonal. Typical habit: prismatic crystals, tabular, massive.

Often confused with

Fluorapophyllite-(Na) vs. its common look-alikes — and how to tell them apart in the field.

How to tell apart: Luster reads vitreous on Fluorapophyllite-(Na) and vitreous to pearly on Heulandite.

Often found alongside fluorapophyllite-(na)

Minerals reported to co-occur with fluorapophyllite-(na). Spotting these in float or country rock is a strong cue you are in the right ground.

All properties

Chemical formula: NaCa₄Si₈O₂₀F·8H₂O
Mohs hardness: 4.5-5
Density: 2.3-2.5 g/cm³
Colors: White Colorless Pink Yellowish
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Tetragonal
Crystal habit: Prismatic Crystals, Tabular, Massive
Cleavage: Perfect Basal
Rarity: Uncommon
Uses: Collector, Specimen
Host rock: Basalt Cavities, Volcanic Vugs
Typical price: $10-100 per specimen

Where rockhounds find fluorapophyllite-(na)

Classic worldwide localities

Pune district, India
Mont Saint-Hilaire, Canada
Khibiny Massif, Russia
Norway

Field-hunting tip

Look in basalt cavities, volcanic vugs country — that is the host setting where fluorapophyllite-(na) typically forms. If you start seeing heulandite, stilbite, quartz in float, you are in the right ground. Field specimens usually show a prismatic crystals, tabular, massive habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify fluorapophyllite-(na)?+

Mohs hardness is 4.5-5. It typically shows a vitreous luster. The streak is white. Common colors include white, colorless, pink, yellowish.

Where is fluorapophyllite-(na) found?+

Notable localities include Pune district, India; Mont Saint-Hilaire, Canada; Khibiny Massif, Russia; Norway.

How much is fluorapophyllite-(na) worth?+

Typical asking prices fall in the range of $10-100 per specimen. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like fluorapophyllite-(na)?+

Fluorapophyllite-(Na) is most often confused with Fluorapophyllite-(K), Heulandite, Stilbite. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with fluorapophyllite-(na)?+

Fluorapophyllite-(Na) commonly co-occurs with Heulandite, Stilbite, Quartz, Calcite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does fluorapophyllite-(na) form in?+

Fluorapophyllite-(Na) typically forms in basalt cavities, volcanic vugs. Working float back to the host body is the standard way to chase a fresh occurrence.

What is fluorapophyllite-(na) used for?+

Fluorapophyllite-(Na) is used in collector, specimen.

Find fluorapophyllite-(na) on the map

RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.