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Murra-el-elevyn Cave, Cocklebiddy Roadhouse, Dundas Shire, Western Australia, Australiai
Regional Level Types
Murra-el-elevyn CaveCave
Cocklebiddy Roadhouse- not defined -
Dundas ShireShire
Western AustraliaState
AustraliaCountry

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Key
Latitude & Longitude (WGS84):
32° 2' 35'' South , 126° 2' 18'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


Type locality for bisphosphammite, and a number of bat guano related species. Located about 5 kilometres west of the Cocklebiddy Roadhouse and 1 kilometre south of the Eyre Highway. A permit is required to enter the cave, although there appears no obvious easy access from the sinkhole.

A sinkhole with a 300-metre long main tunnel, and two interconnected networks, one half filled with water and the other completely filled.

The breakdown of bat droppings and urine to form nitrogen has interacted with the phosphate, potassium, and calcium of the limestone to form a suite of unusual species. The cave is the roosting place of Chalinolobus Morio (Little Chocolate Bat). They have created a large guano pile coating the limestone with a buff to dark brown-black massive to crystalline crust with insect remains, bat droppings, dead bats, and skeletal material in an atmosphere of 88% humidity (have we put you off becoming a geologist yet!)

The massive portion of the crust is an intergrown mixture of aphthitalite, syngenite, monetite, whitlockite, gypsum, and organic material. The crystalline coatings are biphosphammite, ammonian KH2PO4 which is described as visually identical to bisphosphammite but yet to be studied, occurring as buff to white 2.0x0.2mm tapering prisms. Hannayite is found as occasional clear pale brown platy 0.2x0.5mm crystals in groups coating the crusts. Brushite and taylorite as scattered or grouped white feathery 0.25x0.20mm crystals. Mirabilite as small clear crystal groups with organic fibres on steep slopes near the guano pile but not associated with the crust. Dahllite as dark brown, smooth coatings on the higher ledges where the bats once roosted.

Regions containing this locality

Australian Plate (Australia Plate)Tectonic Plate
Central Australian Element, AustraliaCraton
Eucla Basin, AustraliaBasin
Bight Basin, AustraliaBasin
Madura Shelf, Bight Basin, Australia

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Guano Minerals from Murra-el-Elevyn Cave Western Australia; P.J. Bridge; Govt Chem Laboratories WA; Mineralogical Magazine Dec 1973, vol 39, pp 467-469
Aphthitalite
Formula: (K,Na)3Na(SO4)2
Reference: Caves: processes, development, and management By David S. Gillieson; Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469
Arcanite
Formula: K2SO4
Reference: Bideaux et al. Handbook of Mineralogy.
Arcanite var: Taylorite (of Dana)
Formula: (K,NH4)2SO4
Reference: Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469
Archerite
Formula: (K,NH4)(H2PO4)
Reference: Mineralogical Magazine 39,467-469(1973)
Biphosphammite (TL)
Formula: NH4(H2PO4)
Type Locality:
Reference: Mineralogical Magazine(1972) 38, 965-967
Brushite
Formula: Ca(HPO4) · 2H2O
Reference: Mineralogical Magazine (1973): 39,467-469.; Caves: processes, development, and management By David S. Gillieson
Guanine
Formula: C5H5N5O
Reference: Mineralogical Magazine (1974): 39: 889.-890.; Caves: processes, development, and management By David S. Gillieson; Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469
Gypsum
Formula: CaSO4 · 2H2O
Reference: Guano Minerals from Murra-el-Elevyn Cave Western Australia; P.J. Bridge; Govt Chem Laboratories WA; Mineralogical Magazine Dec 1973, vol 39, pp 467-469
Hannayite
Formula: (NH4)2Mg3H4(PO4)4 · 8H2O
Reference: Mineralogical Magazine 39,467-469(1973); Caves: processes, development, and management By David S. Gillieson
Hydroxylapatite
Formula: Ca5(PO4)3(OH)
Reference: Guano Minerals from Murra-el-Elevyn Cave Western Australia; P.J. Bridge; Govt Chem Laboratories WA; Mineralogical Magazine Dec 1973, vol 39, pp 467-469
Hydroxylapatite var: Carbonate-rich Hydroxylapatite
Formula: Ca5(PO4,CO3)3(OH,O)
Reference: Guano Minerals from Murra-el-Elevyn Cave Western Australia; P.J. Bridge; Govt Chem Laboratories WA; Mineralogical Magazine Dec 1973, vol 39, pp 467-469
Mirabilite
Formula: Na2SO4 · 10H2O
Reference: Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469
Monetite
Formula: Ca(HPO4)
Reference: Caves: processes, development, and management By David S. Gillieson; Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469
Syngenite
Formula: K2Ca(SO4)2 · H2O
Reference: Caves: processes, development, and management By David S. Gillieson; Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469
Whitlockite
Formula: Ca9Mg(PO4)6(HPO4)
Reference: Caves: processes, development, and management By David S. Gillieson; Bridge, P.J.(1973):Guano Minerals from Murra-el-Evelyn Cave Western Australia, Mineralogical Magazine (December 1973):39:467-469

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Aphthitalite7.AC.35(K,Na)3Na(SO4)2
Arcanite7.AD.05K2SO4
var: Taylorite (of Dana)7.AD.05(K,NH4)2SO4
Gypsum7.CD.40CaSO4 · 2H2O
Mirabilite7.CD.10Na2SO4 · 10H2O
Syngenite7.CD.35K2Ca(SO4)2 · H2O
Group 8 - Phosphates, Arsenates and Vanadates
Archerite8.AD.15(K,NH4)(H2PO4)
Biphosphammite (TL)8.AD.15NH4(H2PO4)
Brushite8.CJ.50Ca(HPO4) · 2H2O
Hannayite8.CH.35(NH4)2Mg3H4(PO4)4 · 8H2O
Hydroxylapatite8.BN.05Ca5(PO4)3(OH)
var: Carbonate-rich Hydroxylapatite8.BN.05Ca5(PO4,CO3)3(OH,O)
Monetite8.AD.10Ca(HPO4)
Whitlockite8.AC.45Ca9Mg(PO4)6(HPO4)
Group 10 - Organic Compounds
Guanine10.CA.30C5H5N5O
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals arranged by Dana 8th Edition classification

Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
A2XO4
Aphthitalite28.2.2.1(K,Na)3Na(SO4)2
Arcanite28.2.1.2K2SO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
A2XO4·xH2O
Mirabilite29.2.2.1Na2SO4 · 10H2O
A2B(XO4)2·xH2O
Syngenite29.3.1.1K2Ca(SO4)2 · H2O
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 37 - ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
Miscellaneous
Archerite37.1.4.2(K,NH4)(H2PO4)
Biphosphammite (TL)37.1.4.1NH4(H2PO4)
Monetite37.1.1.1Ca(HPO4)
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Whitlockite38.3.4.1Ca9Mg(PO4)6(HPO4)
Group 39 - HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
A[HXO4]·xH2O
Brushite39.1.1.1Ca(HPO4) · 2H2O
Miscellaneous
Hannayite39.3.5.1(NH4)2Mg3H4(PO4)4 · 8H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Hydroxylapatite41.8.1.3Ca5(PO4)3(OH)
Group 50 - ORGANIC COMPOUNDS
Miscellaneous
Guanine50.4.5.1C5H5N5O
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Arcanite
var: Taylorite (of Dana)
-(K,NH4)2SO4
Hydroxylapatite
var: Carbonate-rich Hydroxylapatite
-Ca5(PO4,CO3)3(OH,O)

List of minerals for each chemical element

HHydrogen
H BiphosphammiteNH4(H2PO4)
H GuanineC5H5N5O
H BrushiteCa(HPO4) · 2H2O
H MirabiliteNa2SO4 · 10H2O
H Hannayite(NH4)2Mg3H4(PO4)4 · 8H2O
H MonetiteCa(HPO4)
H SyngeniteK2Ca(SO4)2 · H2O
H Archerite(K,NH4)(H2PO4)
H WhitlockiteCa9Mg(PO4)6(HPO4)
H Hydroxylapatite (var: Carbonate-rich Hydroxylapatite)Ca5(PO4,CO3)3(OH,O)
H ApatiteCa5(PO4)3(Cl/F/OH)
H GypsumCaSO4 · 2H2O
H Arcanite (var: Taylorite (of Dana))(K,NH4)2SO4
H HydroxylapatiteCa5(PO4)3(OH)
CCarbon
C GuanineC5H5N5O
C Hydroxylapatite (var: Carbonate-rich Hydroxylapatite)Ca5(PO4,CO3)3(OH,O)
NNitrogen
N BiphosphammiteNH4(H2PO4)
N GuanineC5H5N5O
N Hannayite(NH4)2Mg3H4(PO4)4 · 8H2O
N Arcanite (var: Taylorite (of Dana))(K,NH4)2SO4
OOxygen
O BiphosphammiteNH4(H2PO4)
O GuanineC5H5N5O
O Aphthitalite(K,Na)3Na(SO4)2
O BrushiteCa(HPO4) · 2H2O
O MirabiliteNa2SO4 · 10H2O
O Hannayite(NH4)2Mg3H4(PO4)4 · 8H2O
O MonetiteCa(HPO4)
O SyngeniteK2Ca(SO4)2 · H2O
O Archerite(K,NH4)(H2PO4)
O WhitlockiteCa9Mg(PO4)6(HPO4)
O Hydroxylapatite (var: Carbonate-rich Hydroxylapatite)Ca5(PO4,CO3)3(OH,O)
O ApatiteCa5(PO4)3(Cl/F/OH)
O GypsumCaSO4 · 2H2O
O ArcaniteK2SO4
O Arcanite (var: Taylorite (of Dana))(K,NH4)2SO4
O HydroxylapatiteCa5(PO4)3(OH)
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Na Aphthitalite(K,Na)3Na(SO4)2
Na MirabiliteNa2SO4 · 10H2O
MgMagnesium
Mg Hannayite(NH4)2Mg3H4(PO4)4 · 8H2O
Mg WhitlockiteCa9Mg(PO4)6(HPO4)
PPhosphorus
P BiphosphammiteNH4(H2PO4)
P BrushiteCa(HPO4) · 2H2O
P Hannayite(NH4)2Mg3H4(PO4)4 · 8H2O
P MonetiteCa(HPO4)
P Archerite(K,NH4)(H2PO4)
P WhitlockiteCa9Mg(PO4)6(HPO4)
P Hydroxylapatite (var: Carbonate-rich Hydroxylapatite)Ca5(PO4,CO3)3(OH,O)
P ApatiteCa5(PO4)3(Cl/F/OH)
P HydroxylapatiteCa5(PO4)3(OH)
SSulfur
S Aphthitalite(K,Na)3Na(SO4)2
S MirabiliteNa2SO4 · 10H2O
S SyngeniteK2Ca(SO4)2 · H2O
S GypsumCaSO4 · 2H2O
S ArcaniteK2SO4
S Arcanite (var: Taylorite (of Dana))(K,NH4)2SO4
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K Aphthitalite(K,Na)3Na(SO4)2
K SyngeniteK2Ca(SO4)2 · H2O
K Archerite(K,NH4)(H2PO4)
K ArcaniteK2SO4
K Arcanite (var: Taylorite (of Dana))(K,NH4)2SO4
CaCalcium
Ca BrushiteCa(HPO4) · 2H2O
Ca MonetiteCa(HPO4)
Ca SyngeniteK2Ca(SO4)2 · H2O
Ca WhitlockiteCa9Mg(PO4)6(HPO4)
Ca Hydroxylapatite (var: Carbonate-rich Hydroxylapatite)Ca5(PO4,CO3)3(OH,O)
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca GypsumCaSO4 · 2H2O
Ca HydroxylapatiteCa5(PO4)3(OH)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Bridge, P.J. (1973) Guano Minerals from Murra-el-Evelyn Cave Western Australia. Mineralogical Magazine, 39, 467-469.


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.
 
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