This quarry, also known as Lottah Road Quarry, Fieldwicks Quarry or the Weldborough Pass Quarry, is an operating road metal quarry located in Tertiary basalt on Lottah Road near Weldborough Pass.

Known for particularly nice gmelinite, natrolite, thomsonite and analcime in blocky, vesicular basalt, and also anorthoclase-sanidine-rich granulite and lherzolite/peridotite xenoliths in surrounding and overlying massive to columnar basalt.

Site is under an active mining lease and permission to enter is required from the Tenement Holders, no public access.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Aggregates

Mineral List

8 valid minerals.

Detailed Mineral List:

ⓘ Albite var. Anorthoclase

Formula: (Na,K)AlSi₃O₈

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ 'Apophyllite Group'

Formula: AB₄[Si₈O₂₂]X · 8H₂O

References:

R Bottrill, unpublished. Analyses

ⓘ Calcite

Formula: CaCO₃

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ 'Gismondine Subgroup'

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ Gmelinite-Ca

Formula: Ca₂(Si₈Al₄O₂₄] · 11H₂O

References:

Ralph Bottrill

ⓘ 'Gmelinite Subgroup'

References:

Bottrill, R. S., and Everard, J. L.

1997, Zeolites in Tasmania. Tasmanian Geological Survey, Unpublished Report 1997/07

ⓘ Gonnardite

Formula: (Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

References:

Saul Krotki collection

ⓘ 'Phillipsite Subgroup'

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ Sanidine

Formula: K(AlSi₃O₈)

References:

Bottrill, Ralph S., Baker, William. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey of Tasmania Bulletin 73, Mineral Resources Tasmania. 1-254

ⓘ Saponite

Formula: Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O

References:

R Bottrill, unpublished. Analyses

ⓘ 'Tetranatrolite'

References:

R Bottrill, unpublished. Analyses

ⓘ Thomsonite-Ca

Formula: NaCa₂[Al₅Si₅O₂₀] · 6H₂O

References:

Saul Krotki collection

Gallery:

Na(AlSi₂O₆) · H₂Oⓘ Analcime

CaCO₃ⓘ Calcite

Ca₂(Si₈Al₄O₂₄] · 11H₂Oⓘ Gmelinite-Ca

ⓘ 'Gmelinite Subgroup'

Na₂Al₂Si₃O₁₀ · 2H₂Oⓘ Natrolite

NaCa₂[Al₅Si₅O₂₀] · 6H₂Oⓘ Thomsonite-Ca

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Saponite	9.EC.45	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
ⓘ	Sanidine	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite var. Anorthoclase	9.FA.35	(Na,K)AlSi₃O₈
ⓘ	Gonnardite	9.GA.05	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Thomsonite-Ca	9.GA.10	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
ⓘ	'Tetranatrolite'	9.GA.20
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Gmelinite-Ca	9.GD.05	Ca₂(Si₈Al₄O₂₄] · 11H₂O
Unclassified
ⓘ	'Apophyllite Group'	-	AB₄[Si₈O₂₂]X · 8H₂O
ⓘ	'Gmelinite Subgroup'	-
ⓘ	'Phillipsite Subgroup'	-
ⓘ	'Gismondine Subgroup'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Apophyllite Group	AB₄[Si₈O₂₂]X · 8H₂O
H	ⓘ Gonnardite	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
H	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
H	ⓘ Gmelinite-Ca	Ca₂(Si₈Al₄O₂₄] · 11H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
O	ⓘ Apophyllite Group	AB₄[Si₈O₂₂]X · 8H₂O
O	ⓘ Calcite	CaCO₃
O	ⓘ Gonnardite	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Sanidine	K(AlSi₃O₈)
O	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
O	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
O	ⓘ Gmelinite-Ca	Ca₂(Si₈Al₄O₂₄] · 11H₂O
Na	Sodium
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Na	ⓘ Gonnardite	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Mg	Magnesium
Mg	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	Aluminium
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Al	ⓘ Gonnardite	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Sanidine	K(AlSi₃O₈)
Al	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Al	ⓘ Gmelinite-Ca	Ca₂(Si₈Al₄O₂₄] · 11H₂O
Si	Silicon
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Si	ⓘ Apophyllite Group	AB₄[Si₈O₂₂]X · 8H₂O
Si	ⓘ Gonnardite	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Sanidine	K(AlSi₃O₈)
Si	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Si	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Si	ⓘ Gmelinite-Ca	Ca₂(Si₈Al₄O₂₄] · 11H₂O
K	Potassium
K	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
K	ⓘ Sanidine	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Gonnardite	(Na,Ca)₂(Si,Al)₅O₁₀ · 3H₂O
Ca	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Ca	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Ca	ⓘ Gmelinite-Ca	Ca₂(Si₈Al₄O₂₄] · 11H₂O
Fe	Iron
Fe	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O

Other Regions, Features and Areas containing this locality

Australia

Lachlan OrogenOrogen
- Melbourne-Mathinna ZoneZone (Tectonic)

Australian PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Bottrill, R. S., and Everard, J. L.; 1997, Zeolites in Tasmania. Tasmanian Geological Survey, Unpublished Report 1997/07

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