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Arsenate

Barahonaite-(Al)

(Ca,Cu,Na,Fe³⁺,Al)₁₂Al₂(AsO₄)₈(OH,Cl)ₓ·nH₂O
Hardness2–3
Crystal systemMonoclinic
ClassArsenate
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Barahonaite-(Al) specimen

Barahonaite-(Al) Locality: Dolores prospect, Pastrana , Mazarrón-Águilas, Murcia , Spain ( Locality at mindat.org ) Picture width 0,4 mm. Collection and photograph Christian Rewitzer — Photo: Christian Rewitzer · CC BY-SA 3.0

Barahonaite-(Al)

Barahonaite-(Al) is an IMA-recognized mineral species in the arsenate class, with the chemical formula (Ca,Cu,Na,Fe³⁺,Al)₁₂Al₂(AsO₄)₈(OH,Cl)ₓ·nH₂O.

It crystallizes in the monoclinic crystal system.

Key properties: Mohs hardness 2–3; specific gravity 3.03; White streak; Vitreous luster; optically biaxial.

IMA symbol Bho-Al, IMA status: approved, named in 2006.

Found as a secondary mineral in the oxidized zone of a sulfide deposit.

It is found associated with Arsenocrandallite, arsenogoyazite, conichalcite, cobaltarthurite, chlorargyrite, olivenite, azurite, cornwallite, pharmacosiderite, jarosite, zálesíite.

The mineral was named to honor Antonio Barahona (b. 1937) of Madrid, Spain. The suffix indicates the aluminum analog of barahonaite-(Fe).

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more B minerals or help write this entry.