18-21mm PYRITE AMMONITE Fossil Toarcian Jurassic Aveyron France Crystal lot

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18-21mm PYRITE AMMONITE Fossil Toarcian Jurassic Aveyron France Crystal lot:
$7.99

F r e e i n t e r n a t i o n a l s h i p p i n g
Item ExplainAMMONITELocation- Aveyron,FranceAge- about 190 million yearsMezosoic - JurassicLower liasIf you are interested I will help Determine the kind of ammoniteAll photos are enlarged for you to see more details, please check the descriptions for actual dimensions.For an idea of the real size I take pictures on my hands.Shipping TimeFree shipping, so I try to combine all your orders into one package. If I see that you are offerding on other items, I wait for the shipment to complete all your sales. I hope you understand. When you win multiple sales, I add bonus. I send always 1-2 business days after payment of the last item.Paymentcan be made after the completion of all your sales. At the end of the sale, ask about sending the invoice. I am sending international air transport, as a priority shipment.SHIPPING TIME:USA - max 10 daysSouth America - max 14 daysEurope - max 7 daysAsia - max 14 days
I do not ship on weekends. Sometimes orders may delay due to holidays, bad weather, customs inspection and etc. If you didn’t receive the order 30 days after it was sent out, please contact me via message as soon as possible. If your address is changed, please BOTH change your address on PayPal and notify me via message before you make the payment. Otherwise the order might be lost or returned to me.RETURNS & responseAll items will be checked and packed in good condition before shipping. If you are not happy with the item, you can return it in original condition within 14 days from the date received. Please email me first for return address and instructions. I offer money back or exchange for return.Your satisfaction is the most important thing I pursue. I always strive for all 5 star DSR(Detailed Seller Ratings) and POSITIVE response. If you have any questions/complaints please feel free to contact me before leave response. You can leave message at any time and I will try my best to solve the problem as soon as possible.

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MINERAL PYRITE

The mineral pyrite, or iron pyrite, is iron disulfide, FeS2. Pyrite is commonly called to as \'\'Fool\'s Gold\'\'. Pyrite is by far the most common and the most often mistaken for gold. Difference is that Pyrite is much harder and more brittle than gold. Pyrite contains a high percentage of iron.One of the most important chemical processes in organic-rich marine sediments is decomposition of organic matter in bacterial sulphate reduction. Bacterial sulphate reduction produces bisulphide. The reaction of reduced sulphur with reactive dissolved iron and iron minerals, if available, results in the formation of iron sulphides. The most common iron sulphide in pyrite.The amount of pyrite formation in marine sediments is largely determined by the availability of sulphate, reactive iron and reactive organic matter during the formation of the sediments.Pyrite - during the fossilization process the formation of the bisulfite iron - FeS2. Pyrite takes place in oxygen-free Environments, enriched with hydrogen sulphide (H2S). . Thus preserved fossils are characterized by striking yellow color and contrast well with the surrounding upper.ammonite is necessary to preserve the widest drought, otherwise subject to oxidation and darkens!