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Jarandolite

Big Photo

Niedersachswerfen, Nordhausen, Harz Mts, Thuringia, Germany
© jo-esche 2006

Formula:
Ca[B
 
3
O
 
4
(OH)
 
3
]
System:MonoclinicColour:colourless to white
Hardness:5½ - 6
Name:For the Jarandol basin, Serbia, in which the type locality is situated.
This page provides mineralogical data about Jarandolite.

Classification of Jarandolite

IMA status:Approved 1995
Strunz 8th edition ID:5/J.03-05
Nickel-Strunz 10th (pending) edition ID:6.CB.25

6 : BORATES
C : Triborates
B : Ino-triborates
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Type Occurrence of Jarandolite

Type Locality:Pobrdzhsky Potok & Peskanya deposits, Balevats, Jarandol Basin, Serbia
General Appearance of Type Material:radiating aggregates to 3.5 x 2 cm, consisting of elongated tabular crystals to 1.5 cm
Geological Setting of type material:Borate deposit
Associated Minerals at type locality:
VeatchiteUlexiteStudenitsitePentahydroboriteMontmorillonite
HowliteColemanite

Physical Properties of Jarandolite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:colourless to white
Streak:white
Hardness (Mohs):5½ - 6
Tenacity:Brittle
Cleavage:Perfect
on (001)
Density (measured):2.49 g/cm3

Crystallography of Jarandolite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b (P1 1 21/b) [P21/c] {P1 21/c 1} {P21/a}
Cell Parameters:a = 8.386Å, b = 8.142Å, c = 7.249Å
β = 98.33°
Ratio:a:b:c = 1.03 : 1 : 0.89
Unit Cell Volume:V 489.7 ų
Z:4
Morphology:tabular on [001], elongated on [100], dominant faces: (001), (011), (11_1)
X-Ray Powder Diffraction:
d-spacingIntensity
4.32 (55)
3.39 (100)

Chemical Properties of Jarandolite

Formula:
Ca[B
 
3
O
 
4
(OH)
 
3
]
Essential elements:
All elements listed in formula:B, Ca, H, O

Relationship of Jarandolite to other Species

Related Minerals - Nickel-Strunz Grouping):
6.CB.10Colemanite
Ca[B
 
3
O
 
4
(OH)
 
3
] · H
 
2
O
6.CB.15Hydroboracite
CaMg[B
 
3
O
 
4
(OH)
 
3
]
 
2
 · 3H
 
2
O
6.CB.20Howlite
Ca
 
2
B
 
5
SiO
 
9
(OH)
 
5

Other Names for Jarandolite

Synonyms:
IMA1995-020IMA1995-020cSerbianiteSrbianite
German names:
Jarandolith

Other Information

Fluorescence in UV light:none
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 Jarandolite

Reference List:• Malinko, S.V., Aničić, S., Joksomović, D., Lisitsyn, A.E., Rudnev, V.V., Dorokhova, G.I., Yamnova, N.A., Vlasov, V.V., Ozol, A.A., Chukanov, N.V. (2004): Jarandolite Ca[B3O4(OH)3], calcium borate from Serbia: new name and new data. New Data on Minerals, 39, 26-31.

Internet Links for Jarandolite

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    Localities for Jarandolite

    (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.
    Germany
     
    • Thuringia
      • Harz Mts
        • Nordhausen
    		S. Weiß: Lapis 29(12):39 (2004)
    Serbia
     
    • Jarandol Basin
      • Balevats
    		S. V. Malinko et al.: New Data on Minerals 39:26-31 (2004)
    Mineral and/or Locality
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