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Picropharmacolite

Big Photo

Shaft 371, Schlema-Hartenstein District, Erzgebirge, Saxony, Germany
© Thomas Witzke

Show Picropharmacolite Photos (52)
Formula:
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 11H
 
2
O
System:TriclinicColour:White; colourless in ...
Hardness:1 - 2
Name:Named in 1819 in allusion to it's composition, containing magnesia, and its similarity to Pharmacolite.


Usually found as small to microscopic pearly white botryoids with a radiating foliated structure internally, and less commonly as silky fibrous aggregates or minute acicular crystals.

Classification of Picropharmacolite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/C.24-90
Nickel-Strunz 10th (pending) edition ID:8.CH.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1
Dana 7th edition ID:39.2.4.1
Dana 8th edition ID:39.2.4.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
Hey's CIM Ref.:20.2.21

20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
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Type Occurrence of Picropharmacolite

Type Locality:Ore dumps, Richelsdorf Smelter, Süss, Richelsdorf District, North Hesse, Hesse, Germany
Year of Discovery:1819

Occurrences of Picropharmacolite

Geological Setting:A secondary mineral found in the oxidized zones of metal ore deposits rich in arsenic.

Physical Properties of Picropharmacolite

Lustre:Silky, Pearly
Diaphaneity (Transparency):Translucent, Opaque
Colour:White; colourless in transmitted light.
Streak:White
Hardness (Mohs):1 - 2
Hardness Data:Measured
Tenacity:Fragile
Cleavage:Perfect
On {100} and {010}, perfect.
Fracture:Micaeous
Density (measured):2.58 g/cm3
Density (calculated):2.6 g/cm3
Comment:Measured value on Joplin, Missouri, material.

Crystallography of Picropharmacolite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 13.547Å, b = 13.5Å, c = 6.71Å
α = 99.85°, β = 96.41°, γ = 91.6°
Ratio:a:b:c = 1.003 : 1 : 0.497
Unit Cell Volume:V 1,200.12 ų (Calculated from Unit Cell)
Z:2
Morphology:Crystals rare, rectangular prisms elongated on [001]; more typically spherical to botryoidal with a radiating foliated internal structure, or as fibrous aggregates or minute acicular crystals.
Twinning:None reported.
X-Ray Powder Diffraction:
d-spacingIntensity
13.50(100)
9.20(60)
4.84(40)
4.44(40)
3.78(60)
3.18(80)
3.066(70)

Optical Data of Picropharmacolite

Type:Biaxial
RI values: nα = 1.631 nβ = 1.632 nγ = 1.640
2V:Measured: 40° , Calculated: 40°
Maximum Birefringence:δ = 0.009

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v strong

Chemical Properties of Picropharmacolite

Formula:
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 11H
 
2
O
Essential elements:As, Ca, H, O
All elements listed in formula:As, Ca, H, Mg, O

Relationship of Picropharmacolite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.CH.05Walentaite
H(Ca,Mn
2+
 
,Fe
2+
 
)Fe
3+
3
[(AsO
 
4
,PO
 
4
)]
 
4
 · 7H
 
2
O
8.CH.10Anapaite
Ca
 
2
Fe
2+
 
[PO
 
4
]
 
2
 · 4H
 
2
O
8.CH.20Dittmarite
NH
 
4
MgPO
 
4
·H
 
2
O
8.CH.20Niahite
(NH
 
4
)(Mn
2+
 
,Mg)[PO
 
4
] · H
 
2
O
8.CH.25Francoanellite
K
 
3
Al
 
5
[(HPO
 
4
)
 
3
|PO
 
4
]
 
2
 · 12H
 
2
O
8.CH.25Taranakite
(K,NH
 
4
)Al
 
3
(PO
 
4
)
 
3
OH·9H
 
2
O
8.CH.30Schertelite
(NH
 
4
)
 
2
MgH
 
2
(PO
 
4
)
 
2
·4H
 
2
O
8.CH.35Hannayite
(NH
 
4
)
 
2
Mg
 
3
H
 
4
(PO
 
4
)
 
4
·8H
 
2
O
8.CH.40Struvite
NH
 
4
MgPO
 
4
·6H
 
2
O
8.CH.40Struvite-K
KMg(PO
 
4
)·6H
 
2
O
8.CH.45Rimkorolgite
(Mg,Mn)
 
5
(Ba,Sr,Ca)(PO
 
4
)
 
4
·8H
 
2
O
8.CH.50Bakhchisaraitsevite
Na
 
2
Mg
 
5
(PO
 
4
)
 
4
·7H
 
2
O
8.CH.55Fahleite
Zn
 
5
CaFe
 
2
(AsO
 
4
)
 
6
·14H
 
2
O
8.CH.55Smolyaninovite
8.CH.55Smolianinovite
(Co,Ni,Mg,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(AsO
 
4
)
 
4
·11H
 
2
O
8.CH.60Barahonaite-(Al)
(Ca,Cu,Na,Fe
3+
 
,Al)
 
12
Al
 
2
(AsO
 
4
)
 
8
(OH,Cl)
 
x
·nH
 
2
O
8.CH.60Barahonaite-(Fe)
(Ca,Cu,Na,Fe
3+
 
,Al)
 
12
Fe
3+
2
(AsO
 
4
)
 
8
(OH,Cl)
 
x
·nH
 
2
O
Related Minerals - Hey's Index Grouping:
20.2.1Bearsite
Be
 
2
[OH|AsO
 
4
] · 4H
 
2
O
20.2.2Brassite
MgHAsO
 
4
·4H
 
2
O
20.2.3Rösslerite
MgHAsO
 
4
·7H
 
2
O
20.2.4Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.2.5Weilite
CaHAsO
 
4
20.2.6Johnbaumite
Ca
 
5
[OH|(AsO
 
4
)
 
3
]
20.2.7Haidingerite
Ca[HAsO
 
4
] · H
 
2
O
20.2.8Pharmacolite
CaHAsO
 
4
·2H
 
2
O
20.2.9Sainfeldite
Ca
 
5
H
 
2
(AsO
 
4
)
 
4
·4H
 
2
O
20.2.10Vladimirite
Ca
 
5
[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 5H
 
2
O
20.2.11Guérinite
Ca
 
5
[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 9H
 
2
O
20.2.12Ferrarisite
Ca
 
5
[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 9H
 
2
O
20.2.13Rauenthalite
Ca
 
3
[AsO
 
4
]
 
2
 · 10H
 
2
O
20.2.14Phaunouxite
Ca
 
3
[AsO
 
4
]
 
2
 · 11H
 
2
O
20.2.15Mcnearite
NaCa
 
5
[(HAsO
 
4
)
 
4
|AsO
 
4
] · 4H
 
2
O
20.2.16Bergslagite
CaBe[OH|AsO
 
4
]
20.2.17Adelite
CaMg[AsO
 
4
](OH)
20.2.18Talmessite
Ca
 
2
Mg[AsO
 
4
]
 
2
 · 2H
 
2
O
20.2.19Irhtemite
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 4H
 
2
O
20.2.20Camgasite
CaMg[OH|AsO
 
4
] · 5H
 
2
O
20.2.22Bariopharmacosiderite
BaFe
3+
4
[(OH)
 
5
|(AsO
 
4
)
 
3
] · 5H
 
2
O

Other Names for Picropharmacolite

German names:
Picropharmacolit
Russian names:
Пикрофармаколит
Spanish names:
Picropharmacolita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Picropharmacolite

Reference List:Stromeyer (1819) Annalen der Physik, Halle, Leipzig: 61: 185.

Frenzel (1873) Jb. Min.: 786.

Genth (1890) American Journal of Science: 40: 204.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 120.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 740-741.

American Mineralogist (1981): 66: 385-391.

Gaines, Richard V., H. Catherine, W. Skinner, Eugene E. Foord, Brian Mason, Abraham Rosenzweig (1997), Dana's New Mineralogy : The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana: 741.

Internet Links for Picropharmacolite

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    Localities for Picropharmacolite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Austria
     
    • Carinthia
      • Friesach - Hüttenberg area
        • Hüttenberg
          • Lölling
            • Stelzing
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    Nat. Hist. Mus. Vienna collection
    Chile
     
    • Atacama Region
      • Copiapó Province
        • Tierra Amarilla
          • Pampa Larga district
    		maurizio dini collection - quantitative analysis
    China
     
    • Hunan Province
      • Changde Prefecture
        • Shimen Co.
          • Shimen As-(Au) deposit
    		http://www.smartminerals.com/cina2004/art_hunan.htm
    • Yunnan Province
      • Chuxiong Autonomous Prefecture
        • Nanhua Co.
    		Zhang Zhong, Zhang Baogui, Hu Jing, Yao Linbo, and Tian Yifu (2007): Science in China, Series D (Earth Sciences), 50(3), 359-370.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
    		Lapis 2002(7/8), 63-65
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Klášterec nad Ohří
    		No reference listed
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Javorník
    		Sejkora, J.: Uranové ložisko Zálesí v Rychlebských horách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 105-110.
    France
     
    • Alsace
      • Haut-Rhin
        • Ste Marie-aux-Mines (Markirch)
    		Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    Wittern, Journée: "Mineralien finden in den Vogesen", 1997
        • Thur valley (Thann valley)
          • Kruth
    		Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    • Languedoc-Roussillon
      • Aude
        • Carcassonne
          • Mas-Cabardès
            • Salsigne
    		Rocks & Min.: 60:242.
    Pelison P., Descouens D. (1987), Présence de minéraux de néoformation dans les scories de l'ancienne usine de Villagnère (Aude), Le Cahier des Micromonteurs, n°2, pp: 6-10
    • Limousin
      • Haute-Vienne
        • Nantiat
          • Vaulry
    		Queneau Patrice collection
    • Provence-Alpes-Côte d'Azur
      • Alpes-Maritimes
        • Duranus
    		No reference listed
    Cuchet S. (2000), Mystérieuse irhtémite à Lucéram, Alpes-Maritimes, Le Règne Minéral, n°36, pp: 38-42
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Alpirsbach
    		No reference listed
    Erzgräber 1987(2), 54
        • Hornberg
    		Gröbner, J. & Schrenk, D. (2005): Die Mineralien des Tunnels bei Hornberg. Der Erzgräber 19, 17-25. (in German)
        • Schenkenzell
          • Wittichen
            • Böckelsbach valley
    		S. Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
            • Burgfelsen
    		No reference listed
            • Heubach Valley
    		No reference listed
        • Schiltach
          • Stammelbach valley
    		[Lapis 1992, 11, p.13-20]
    • Hesse
      • North Hesse
        • Richelsdorf District
          • Bauhaus
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
          • Süss
            • Richelsdorf Smelter
    		S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
      • Spessart Mts
        • Gelnhausen
          • Bieber
    		No reference listed
    • Lower Saxony
      • Harz Mts
        • St Andreasberg District
          • St Andreasberg
    		No reference listed
    • Saxony-Anhalt
      • Harz Mts
        • Wernigerode
          • Hasserode
    		Wittern: "Mineralfundorte in Deutschland", 2001
    • Saxony
      • Erzgebirge
    		Lapis, 17 (12), 24-33.
    Wittern: "Mineralfundorte in Deutschland", 2001
        • Schlema-Hartenstein District
    		T. Witzke (1992) Mineralien-Welt 3(6), 16-18
        • Schneeberg District
          • Neustädtel
    		Lapis 30(7/8):41-70 (2005)
        • Schwarzenberg District
    		Lapis, 17 (7/8), 51-58+90.
    • Thuringia
      • Gera
        • Ronneburg U deposit
    		T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
    		No reference listed
          • Plaka
            • Plaka Mines
    		No reference listed
    No reference listed
    Italy
     
    • Piedmont
      • Torino Province
        • Canavese District
          • Léssolo
            • Cálea
    • Sardinia
      • Medio Campidano Province
        • Gonnosfanadiga
    		Stara, P., Rizzo, R., Tanca, G.A. (1996): Iglesiente e Arburese. Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", Volume 2°, 192 pp.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azzer District
            • Aghbar
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Bou Azzer
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Ightem
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Méchoui
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Republic of Macedonia
     
    • Roszdan
    		[Rieck, B. (1993) - Famous mineral localities: Allchar, Macedonia, Mineralogical Record, 24 (6), 437-449]
    Russia
     
    • Eastern-Siberian Region
      • Tuva Republic
    • Western-Siberian Region
      • Altai Republic (Gorno-Altayskaya Autonomous Oblast')
    Slovakia
     
    • Banská Bystrica Region
      • Štiavnica Mts
    		Ďuďa R.,Kotuľak P., Káňa R., 1993: Bergbau und Mineralien von Banská Štiavnica (Schemnitz), Slowakei. Emser Hefte, 14, 3, 1-70, Haltern
    • Košice Region
      • Eastern Slovenské Rudohorie Mts
        • Dobšiná (Dobschau) Mining District
    		Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    Ďuďa R., Peterec D., 1995 : Die Mineralien der siderit - baryt lagersttäte von Rudňany ( Kotterbach ) in der Slowakei. Mineralien Welt /Haltern/, 1, s.20 - 31
    South Africa
     
    • Mpumalanga Province
    		Min Rec 27:6 pp417-428
    Taiwan
     
    • Taiwan Province
      • Taipei Co.
        • Jui-Fang Town
    UK
     
    • England
      • Cumbria
        • North and Western Region (Cumberland)
          • Threlkeld District
            • St John's in the Vale
    		BMS Database
    • Scotland
      • Central Region (Clackmannanshire)
        • Alva
          • Silver Glen
    USA
     
    • Michigan
      • Keweenaw Co.
        • Mohawk
    		[Mineralogical Record - Vol 23 No. 2]
    • Missouri
      • Jasper Co.
    		Rocks & Min., March 1998.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 741.
    • Nevada
      • Humboldt Co.
        • Potosi District
          • Adam Peak
    		MinRecord 16:15-23
    NBMG Spec. Pub. 31 Minerals of Nevada
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Ogdensburg
            • Sterling Hill
    		Dunn, P.J.: Min.Rec.:10:160-165 (1979); Dunn(1995):Pt5:677.
    • Utah
      • Tooele Co.
        • Deep Creek Mts
          • Gold Hill District (Clifton District)
            • Gold Hill
        • Oquirrh Mts
          • Mercur District (Camp Floyd District)
    		Mineral News: 19(12): 1, 3.
    Mineral and/or Locality
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