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Australian Boulder Opal Rough Chart
Diagramme approximatif d'opale de bloc australien
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AUSTRALIAN BOULDER OPAL ROUGH CHART
Australian Boulder Opal Rough is mined over thousands of square kilometers in central Queensland Australia. Below is a chart showing many of the amazing types of Rough Boulder Opals that have been found and mined in Australia.
The major Opal fields are Winton, Quilpie, Yowah, Korit, Opalton with many opal mines hundreds of kilometers away from any regional town. So if you meet an opal miner and he invites you to his mine you are best to take provisions for a 2 day drive! Some boulder opal is even mined closed to the Northern territory border. Many Opal cutters will specialize in one particular area as boulder opal is found in veins in bedrock and has to be split or sawn or chipped open to expose opal colors.
Most Boulder Opal is sedimentary so it is not cabochon but some colors and pattern are spectacular and opal splits make ideal earrings.
Lightning Ridge Opal needs water to clean the Rough Opal but Boulder Opal is found in more desert conditions and water is scarce even though the Artesian water trough is close by. To combat the lack of water dry agitators are commonly used to expose Opal veins in the host bed rock and bulldozers work well in these hot dry dusty conditions.
Diesel fuel is expensive now and many Opal miners spend thousands dollars each week on fuel so Opal is getting more expensive to mine and harder to find large deposits of Boulder Opal.
SHOP FOR ROUGH BOULDER OPAL
GRAPHIQUE DE L'OPALE DE BOULDER AUSTRALIAN
L'Australian Boulder Opal Rough est exploité sur des milliers de kilomètres carrés dans le centre du Queensland, en Australie. Vous trouverez ci-dessous un tableau illustrant de nombreux types d’opales étonnantes qui ont été découvertes et extraites en Australie.
Les principaux champs d’Opale sont Winton, Quilpie, Yowah, Korit, Opalton et de nombreuses mines d’opale situées à des centaines de kilomètres de toute ville régionale. Donc, si vous rencontrez un mineur d'opale et qu'il vous invite dans sa mine, vous ferez mieux de prendre des dispositions pour 2 jours de route! Certains opales boulder sont même exploités à proximité de la frontière nord. De nombreux découpeurs d’opale se spécialiseront dans un domaine particulier, car l’opale de bloc se trouve dans les veines du substrat rocheux et doit être fendue ou sciée ou déchiquetée pour que les couleurs de l’opale soient visibles.
La plupart des opales boulder sont sédimentaires, donc ce n’est pas un cabochon mais certaines couleurs et motifs sont spectaculaires et les fentes opales font des boucles d'oreilles idéales.
Lightning Ridge Opal a besoin d’eau pour nettoyer l’opale rugueuse, mais l’opale de Boulder se trouve dans des conditions de désert plus poussées et l’eau est rare, même si le bac à eau artésien se trouve à proximité. Pour lutter contre le manque d'eau, des agitateurs à sec sont couramment utilisés pour exposer les veines d'Opal dans la roche du lit hôte et les bulldozers fonctionnent bien dans ces conditions poussiéreuses et sèches.
Le carburant diesel coûte cher à présent et de nombreux mineurs d'Opale dépensent des milliers de dollars par semaine en carburant. Opal devient de plus en plus coûteux à exploiter et il est de plus en plus difficile de trouver de grands gisements de Boulder Opal.
BOUTIQUE POUR OPAL ROUGH BOULDER
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Opal Auctions
- Written - 2nd Mar 2011
- Edited - 3rd Jan 2023
commentaires
You are living my dream! I grew up having free reign at the Opal Hill Fire Agate mine not far from palo verde, California. Helen Madden owned it at that time(60's, 70's, and 80's), and let me collect all the Fire Agate I wanted. I took buckets home and buried them in the yard. I dig one up when I run out of the last batch! The fire in it is comparable to L. R. White Opal! My question is this: Can you "call colors" out of fire opal like I can with fire agate?
You are living my dream! I grew up having free reign at the Opal Hill Fire Agate mine not far from palo verde, California. Helen Madden owned it at that time(60's, 70's, and 80's), and let me collect all the Fire Agate I wanted. I took buckets home and buried them in the yard. I dig one up when I run out of the last batch! The fire in it is comparable to L. R. White Opal! My question is this: Can you "call colors" out of fire opal like I can with fire agate?
Opal Auctions
- Written - 2nd Mar 2011
- Edited - 3rd Jan 2023
Enchères connexes
Catégories associées Australian Rough Opal Auctions , Solid Opal & Australian Sapphire Rings et Solid Opal & Australian Sapphire Pendants
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