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Katukubura Hills, Kolonne (Kolonna; "Kollonne"), Embilipitiya (Embilipitya; Ambilipitiya), Ratnapura District, Sabaragamuwa Province, Sri Lankai
Regional Level Types
Katukubura HillsGroup of Hills
Kolonne (Kolonna; "Kollonne")- not defined -
Embilipitiya (Embilipitya; Ambilipitiya)- not defined -
Ratnapura DistrictDistrict
Sabaragamuwa ProvinceProvince
Sri LankaCountry

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Key
Lock Map
Latitude & Longitude (WGS84):
6° North , 80° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~21km
Locality type:
Group of Hills


Katukubura is located about 6.5 km E of the village/town of Kolonne (note: "Kollonne" is a misnomer), about 20 km NW of the town of Embilipitiya in Sabaragamuwa Province, but near the border between Sabaragamuwa Province and Uva Province.
[Note: The locality is attributed in some of the literature to the Uva province, but according to http://en.wikipedia.org/wiki/Sabaragamuwa_Province Kolonne is in Sabaragamuwa Province, which would also fit the location 20 km NW of Embilipitiya.]

The minerals are found embedded in calcite veins within a high-grade metamorphic biotite gneiss. In 2004 a 50 cm calcite vein was dug to a depth of 5 m (Müller & Jahn, 2006).

Regions containing this locality

AsiaContinent
Indian Plate (India Plate)Tectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals.

Detailed Mineral List:

'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
'Axinite Group'
Reference: Maggie Wilson
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Calcite
Formula: CaCO3
Description: Up to 10 cm crystals of a grayish white or dirty yellowish colour.
Reference: Mineralogical Record (2001) 32:253; Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4): 44-51.
Edenite ?
Formula: {Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Description: There are no analytical data confirming an edenite composition in the amphiboles from this locality.
Reference: GRAZIANI, G.; MARTARELLI, L.; ZOYSA, G.E. (2002): The peculiarity of olivine from Sri Lanka. - Z. Dtsch. Gemm. Ges. 51 (1), 29-39. Trade Name; Dunilite. Canadian Gemmologist, Vol.21, No.3, PP. 84-90.
'Fayalite-Forsterite Series'
Reference: Ray Ladbury
Ferro-edenite ?
Formula: {Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2
Description: There are no analytical data confirming a ferro-edenite composition in the amphiboles from this locality.
Reference: Ikram Mineralogy; Burford M. Gunasekara, D.P., (2000) an unusual Olivine group Gemstone from Kolonne Area, Sri Lanka. Trade Name; Dunilite. Canadian Gemmologist, Vol.21, No.3, PP. 84-90.; Burford .M., Gunasekera ,D.P.,(2000) An unusual olivine group of gemstone from Kolonne, Sri Lanka.Trade name Dunilite. Canadian Gemmologist ,vol 21 no3 ,pp 84-90.
Ferro-hornblende ?
Formula: ☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Description: There are no analysis confirming a ferro-hornblende composition in the amphiboles from this locality.
Reference: Burford .M., Gunasekera ,D.P.,(2000) An unusual olivine group of gemstone from Kolonne, Sri Lanka.Trade name Dunilite. Canadian Gemmologist ,vol 21 no3 ,pp 84-90.
Forsterite
Formula: Mg2SiO4
Description: The forsterite from this locality has a relateively high fayalite content, and is promoted as dunilite in the gem market. The composition is published as CaO: 0.09, MgO:38.87, MnO: 0.31, FeO: 21.69, SiO2: 37.61. Total 98.57 wt% ( Dunil Palitha Gunaseker(2008): Dunilite- Discovered by Mr Dunil Palitha Gunasekera ). Individual crystals up to 30cm are known, often with a tabular habitus and dark grayish green colour. Twins and crystal aggregates are not rare. (Muller)
Reference: Mineralogical Record (2001) 32:253; Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4): 44-51.
Hercynite
Formula: Fe2+Al2O4
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
'Hornblende'
Description: Found as dark green or black crystals up to 35 cm. No chemical analysis has been published of the amphiboles, but the refractive index is 1,658-1,667-1,678 and the density 3,17 g/cm3. Hornblende is in this context used in the petrological use of the term, i.e. as a calcium subgroup amphibole excluding tremolite-actinolite series minerals.
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4): 44-51.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Pargasite ?
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Description: There are no analytical data confirming a pargasite composition for the amphiboles from this locality.
Reference: Mineralogical Record (2001) 32:253; Mineralogical Record(2000) Vol31 pp510–511p; Jordi Fabre
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Pyrite
Formula: FeS2
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Quartz
Formula: SiO2
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Quartz var: Agate
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Quartz var: Amethyst
Formula: SiO2
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Sapphirine
Formula: Mg4(Mg3Al9)O4[Si3Al9O36]
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51; Natural History Museum Vienna collection
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Serendibite
Formula: Ca4[Mg6Al6]O4[Si6B3Al3O36]
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.
Spinel
Formula: MgAl2O4
Reference: Mineralogical Record (2001) 32:253
'Spinel Group'
Formula: AE2O4
Description: Dark, individual octahedral crystal up to 5 cm on the edge and 10 cm total length. No analysis has been published, but the spinels are not ferro-magnetic.
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4): 44-51.
Titanite
Formula: CaTi(SiO4)O
Reference: Mineralogical Record (2001) 32:253
Zircon
Formula: Zr(SiO4)
Reference: Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4), 44-51.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Hercynite4.BB.05Fe2+Al2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Amethyst4.DA.05SiO2
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Edenite ?9.DE.15{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Ferro-edenite ?9.DE.15{Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2
Ferro-hornblende ?9.DE.10☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Forsterite9.AC.05Mg2SiO4
Pargasite ?9.DE.15{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Sapphirine9.DH.45Mg4(Mg3Al9)O4[Si3Al9O36]
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Serendibite9.DH.40Ca4[Mg6Al6]O4[Si6B3Al3O36]
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Axinite Group'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Fayalite-Forsterite Series'-
'Hornblende'-
'Limonite'-(Fe,O,OH,H2O)
'Spinel Group'-AE2O4

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 7 - MULTIPLE OXIDES
AB2X4
Hercynite7.2.1.3Fe2+Al2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Edenite ?66.1.3a.10{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Pargasite ?66.1.3a.12{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2
Sapphirine69.2.1b.1Mg4(Mg3Al9)O4[Si3Al9O36]
Serendibite69.2.1a.6Ca4[Mg6Al6]O4[Si6B3Al3O36]
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Sheets of 6-membered rings with 2:1 clays
Saponite71.3.1b.2Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Axinite Group'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Fayalite-Forsterite Series'-
Ferro-edenite ?-{Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2
Ferro-hornblende ?-☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
'Hornblende'-
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Agate
-SiO2
var: Amethyst-SiO2
'Spinel Group'-AE2O4

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
H Limonite(Fe,O,OH,H2O)
H PhlogopiteKMg3(AlSi3O10)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
H Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
H Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
H Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
BBoron
B SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C CalciteCaCO3
OOxygen
O ForsteriteMg2SiO4
O TitaniteCaTi(SiO4)O
O SpinelMgAl2O4
O CalciteCaCO3
O Spinel GroupAE2O4
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O ZirconZr(SiO4)
O HercyniteFe2+Al2O4
O MagnetiteFe2+Fe23+O4
O SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
O Limonite(Fe,O,OH,H2O)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O Quartz (var: Amethyst)SiO2
O SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
O SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O QuartzSiO2
O Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
O Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
O Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
O Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
NaSodium
Na SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Na Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
Na Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
MgMagnesium
Mg ForsteriteMg2SiO4
Mg SpinelMgAl2O4
Mg SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Mg SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]
Mg Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Mg Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
AlAluminium
Al SpinelMgAl2O4
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al HercyniteFe2+Al2O4
Al SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Al SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Al Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
Al Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Al Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
SiSilicon
Si ForsteriteMg2SiO4
Si TitaniteCaTi(SiO4)O
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si ZirconZr(SiO4)
Si SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Quartz (var: Amethyst)SiO2
Si SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Si SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si QuartzSiO2
Si Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Si Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
Si Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Si Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
SSulfur
S PyriteFeS2
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
CaCalcium
Ca TitaniteCaTi(SiO4)O
Ca CalciteCaCO3
Ca SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Ca SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]
Ca Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Ca Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
Ca Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Ca Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Fe HercyniteFe2+Al2O4
Fe MagnetiteFe2+Fe23+O4
Fe SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Ferro-edenite{Na}{Ca2}{Fe52+}(AlSi7O22)(OH)2
Fe Ferro-hornblende☐{Ca2}{Fe42+Al}(AlSi7O22)(OH)2
ZrZirconium
Zr ZirconZr(SiO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Burford, M. and Gunasekera, D.P. (2000) An unusual olivine group of gemstone from Kolonne, Sri Lanka. Trade name Dunilite. Canadian Gemmologist, 21(3), 84-90.
Scovil, J. (2000) What's new in Minerals? Spring Shows 2000. Mineralogical Record, 31, 510.
Moore, T. (2001) What's new in Minerals? Tucson Show 2001. Mineralogical Record, 32, 253.
Graziani, G., Martarelli, L., and Zoysa, G.E. (2002) The peculiarity of olivine from Sri Lanka. Z. Dtsch Gemm., Ges 51 (1), 29-39.
Galser, S.I. and Gunasekera. D.P. (2005) Rare Dunilite from Kolonne, Sri Lanka. Midlands Focus, 6 th issue, summer 2005, 27-29.
Müller, H.D. and Jahn, S. (2006) Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien-Welt, 17(4), 44-51 (in German).

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