Arrojadite-(SrFe) is a rare phosphate mineral found primarily in complex granitic pegmatites. It typically occurs as massive, granular aggregates with a characteristic dark brownish-yellow to yellowish red hue and vitreous luster, often appearing in association with other phosphate minerals.
Is this arrojadite-(srfe)?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch arrojadite-(srfe) with a known reference. Arrojadite-(SrFe) sits at Mohs 4-5, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Arrojadite-(SrFe) leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Arrojadite-(SrFe) typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: yellow, yellowish red.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: granular, massive, rarely in imperfect crystals.
Often confused with
Arrojadite-(SrFe) vs. its common look-alikes, and how to tell them apart in the field.
Often found alongside arrojadite-(srfe)
Minerals reported to co-occur with arrojadite-(srfe). Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- SrNa₂CaFe²⁺₁₃Al(PO₄)₁₁(OH)₂
- Mohs hardness
- 4-5
- Density
- 3.58 g/cm³
- Colors
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Monoclinic
- Crystal habit
- Granular, Massive, Rarely in Imperfect Crystals
- Cleavage
- On {001}
- Rarity
- Rare
- Uses
- Collector, Scientific Research
- Host rock
- Granite Pegmatites
Where rockhounds find arrojadite-(srfe)
Classic worldwide localities
- Norrö, Rånö, Sweden
- Pegmatite de l'Estrie, Canada
- Black Hills, South Dakota, USA
Field-hunting tip
Look in granite pegmatites country, the host setting where arrojadite-(srfe) typically forms. If you start seeing quartz, albite, muscovite in float, you are in the right ground. Field specimens usually show a granular, massive, rarely in imperfect crystals habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify arrojadite-(srfe)?+
Where is arrojadite-(srfe) found?+
What rocks look like arrojadite-(srfe)?+
What minerals are found with arrojadite-(srfe)?+
What kind of rock does arrojadite-(srfe) form in?+
What is arrojadite-(srfe) used for?+
Find arrojadite-(srfe) on the map
RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.
