Tapiolite
A material that is NOT an approved mineral species
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About Tapiolite
Formula:
(Fe,Mn)(Ta,Nb)2O6
Colour:
Black
Lustre:
Adamantine, Sub-Adamantine, Metallic, Sub-Metallic
Hardness:
6 - 6½
Specific Gravity:
7.35 - 7.37
Crystal System:
Tetragonal
Name:
Named in 1863 by A. E. Nordenskiold after an ancient Finnish divinity.
A name for chemically unanalysed members of the Tapiolite-(Fe)-Tapiolite-(Mn) Series.
The original iron-dominant tapiolite material came from "near Kulmala Farm", Sukula, Tammela, Etelä-Suomen Lääni, Finland.
The original iron-dominant tapiolite material came from "near Kulmala Farm", Sukula, Tammela, Etelä-Suomen Lääni, Finland.
Unique Identifiers
Mindat ID:
3887
Long-form identifier:
mindat:1:1:3887:0
GUID
(UUID V4):
(UUID V4):
99f69e90-65f5-4222-bd69-0a3bf745797f
Classification of Tapiolite
18.1.46
18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
Physical Properties of Tapiolite
Adamantine, Sub-Adamantine, Metallic, Sub-Metallic
Transparency:
Opaque
Colour:
Black
Hardness:
6 - 6½ on Mohs scale
Fracture:
Irregular/Uneven
Density:
7.35 - 7.37 g/cm3 (Measured)
Chemistry of Tapiolite
Mindat Formula:
(Fe,Mn)(Ta,Nb)2O6
Crystallography of Tapiolite
Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Morphology:
Short prismatic [001] or equant, with {001}, {100}, {110} and {113} usually well developed. Untwinned crystals often appear monoclinic or orthorhombic due to distortion.
Twinning:
On {013}, very common. The twins are distorted by elongation on [0_31] (parallel to an adjacent pair of 113 faces) and simulate orthorhombic symmetry. Also twinned on {101}, rare.
Geological Environment
Geological Setting:
Granite pegmatite
Synonyms of Tapiolite
Other Language Names for Tapiolite
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Tapiolite associated with Quartz | SiO2 |
2 photos of Tapiolite associated with Mica Group | |
1 photo of Tapiolite associated with Stibiotantalite | Sb(Ta,Nb)O4 |
1 photo of Tapiolite associated with Albite | Na(AlSi3O8) |
1 photo of Tapiolite associated with Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
1 photo of Tapiolite associated with Pyrochlore Group | A2Nb2(O,OH)6Z |
1 photo of Tapiolite associated with Microlite Group | A2-mTa2X6-wZ-n |
Fluorescence of Tapiolite
Not fluorescent
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Tapiolite
mindat.org URL:
https://www.mindat.org/min-3887.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for Tapiolite
Reference List:
Localities for Tapiolite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Angola | |
| Gonçalves et al. (2019) |
Argentina | |
| GALLISKI (1983) +1 other reference |
Galliski et al. (2002) | |
Australia | |
| Henley et al. (2001) |
| Forsythe (1981) |
Forsythe (1981) | |
Forsythe (1981) | |
Forsythe (1981) | |
Forsythe (1981) | |
Forsythe (1981) | |
Forsythe (1981) | |
| Jacobson et al. (2007) |
| Jacobson et al. (2007) |
Jacobson et al. (2007) | |
On Tapiolite in the Pilbara Goldfield +3 other references | |
| Fetherston (2004) |
Simpson (1928) | |
| Jacobson et al. (2007) |
| Pegmatites of Western Australia +2 other references |
| Pegmatites of Western Australia +2 other references |
| Pegmatites of Western Australia +2 other references |
| Pegamtites of Western Australia +2 other references |
Austria | |
| Mali (2004) |
Brazil | |
William C. van Laer | |
| Cassedanne (1983) |
| found by Christian Bracke. |
| Cassedame et al. (1986) |
| Rob Lavinsky |
Canada | |
| Canadian Mineralogist Vol. 11 (1972) |
| Bannatyne (1985) |
| Nova Scotia Mineral Occurrence Database +1 other reference |
| P.B. Tomascak et al. (1994) |
China | |
| Rao +4 other references |
| Fu et al. (2023) |
| He et al. (2022) |
| Zhou |
Czech Republic | |
| Kruťa T. et al. (1968) |
| Novák |
| Sejkora (1998) |
DR Congo | |
| Frank Melcher et al. (2015) |
Melcher et al. (2015) | |
| Dewaele et al. (2016) |
Egypt | |
| Küster (2009) |
Küster (2009) | |
Ethiopia | |
| Küster et al. (2009) |
Europe | |
Berbain et al. (2012) | |
Finland | |
| Wilke (1976) |
Wilke (1976) +1 other reference | |
| Kojonen et al. (2007) +1 other reference |
| Aarne Laitakari |
| Mötet den 7 December 1899. Geologiska Föreningen i Stockholm Förhandlingar. 21 (p.639-640) |
Aarne Laitakari | |
France | |
| Berbain et al. (2012) |
Germany | |
| Wittern (2001) |
| Weiß (1990) |
| Wittern (2001) |
Ghana | |
| Adams et al. (2023) |
India | |
| Singh et al. (1991) |
| Maithani +1 other reference |
| Acharya et al. (1982) |
Italy | |
| luigi chiappino specimen |
| Vittorio Mattioli (1976) |
Madagascar | |
| Behier (1963) |
Malaysia | |
| Kiong et al. (2004) |
| Teh (1981) |
Mozambique | |
| M.M.Godinho |
Namibia | |
| www.mineral.tu-freiberg.de (2003) |
Keller (1991) | |
| Bezing et al. (2007) |
Nigeria | |
| Rotimi et al. (2012) |
Norway | |
| Neumann (1985) |
| Dittrich (1980) |
| Brøgger (1897) +1 other reference |
| Broegger (1883) |
Pakistan | |
| Dudley Blauwet et al. (2004) |
| Dudley Blauwet (2004) |
imported from Rondu District +1 other reference | |
Poland | |
| Lis et al. (1986) |
Romania | |
| Hirtopanu (2006) |
Russia | |
| Igor Savin's data |
| Gonevchuk et al. (2005) |
Slovakia | |
| Koděra (1986) |
Somalia | |
| Küster (2009) |
South Africa | |
| Cairncross et al. (1995) |
Spain | |
| & locality references +1 other reference |
| Pura Alfonso - J. C. Melgarejo et al. (2000) |
| Alfonso et al. (2018) +1 other reference |
Uganda | |
| Von Knorring et al. (1969) |
Royal Museum for Central Africa specimen Sample n° 13805 (donated by von Knorring 1980) | |
Ukraine | |
| Shatalov (2017) |
| Lazarenko E.K. e.a. Mineralogy of ... |
| Liventseva (n.d.) |
USA | |
| Canadian Mineralogist Vol. 27 (1989) +1 other reference |
| Jarnot (1989) |
| King et al. (1994) +1 other reference |
King et al. (1994) | |
| Guidebook 1 to Mineral Collecting in ... +1 other reference |
| |
| Smith et al. (2000) |
| Meeves et al. (1966) +1 other reference |
| Rocks & Minerals: 67 (6) |
William C. van Laer | |
Černý et al. (1985) | |
| Dietrich (1990) |
| www.uwrf.edu/~wc01 |
| Rocks&Min 76:23-241 |
| Rocks & Minerals 76:386 |
Zimbabwe | |
| Černý et al. (2003) |
J. W. Anthony et al.: Handbook of Mineralogy (1997) | |
| Melcher et al. (2013) |
Alto dos Quintos Mine, Equador, Rio Grande do Norte, Brazil