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Gemstone Beach, Orepuki, Southland District, Southland Region, South Island, New Zealand

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Latitude & Longitude (WGS84): 46° 16' 34'' South , 167° 43' 47'' East
Latitude & Longitude (decimal): -46.27611,167.72988
GeoHash:G#: pxz28z9nj
Locality type:Beach
Köppen climate type:Cfb : Temperate oceanic climate


Half a kilometre north of Orepuki on State Highway 99, a tourist sign will be seen for Gemstone Beach. Such a sign will stop most tourists, even ones with only a cursory interest in rocks. A windswept cold rainy day in winter will guarantee the beach to yourself. A short sandy track leads to an informal car park just behind the primary dunes. Next to the car park is an alluvial gold mining lease, with no entry sign.

Items that may be found on the beach is pale green hydrogrossular, jasper, garnet and black magnetite sands, containing fine gold and platinum, rodingite, idocrase, epidote, fossil worm casts, oil shale, rare sapphire.

The sands extend from Waiau River to the west to Round Hill to the east, and more on gold and platinum will be included under the Round Hill Mindat heading.

Finding gemstones here is pot luck, depending on conditions as to whether any are uncovered. We did not find any, but there are pictures on Mindat (See Orepuki Mindat heading).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 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:

Corundum
Formula: Al2O3
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Corundum var: Sapphire
Formula: Al2O3
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Gold
Formula: Au
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
'Grossular-Hibschite Series'
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Isoferroplatinum
Formula: Pt3Fe
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Quartz
Formula: SiO2
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Quartz var: Jasper
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
'Rodingite'
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
'Sapropelite'
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Local council Site Signage, pers. visit Kim Macdonald. Several photos under Orepuki Mindat heading of specimens from the beach. Several photographs of the sign appear on Google under images for 'gemstone beach'.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
'Isoferroplatinum'1.AG.35Pt3Fe
Group 4 - Oxides and Hydroxides
'Corundum'4.CB.05Al2O3
var: Sapphire4.CB.05Al2O3
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 9 - Silicates
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Grossular-Hibschite Series'-
Rodingite-
Sapropelite-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Platinum Group Metals and Alloys
Isoferroplatinum1.2.5.1Pt3Fe
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
Corundum
var: Sapphire
-Al2O3
'Garnet Group'-X3Z2(SiO4)3
'Grossular-Hibschite Series'-
Quartz
var: Jasper
-SiO2
'Rodingite'-
'Sapropelite'-

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
OOxygen
O CorundumAl2O3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Garnet GroupX3Z2(SiO4)3
O QuartzSiO2
O Corundum (var: Sapphire)Al2O3
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
FFluorine
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al CorundumAl2O3
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Corundum (var: Sapphire)Al2O3
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
SiSilicon
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Garnet GroupX3Z2(SiO4)3
Si QuartzSiO2
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe IsoferroplatinumPt3Fe
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
PtPlatinum
Pt IsoferroplatinumPt3Fe
AuGold
Au GoldAu

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