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RED ROCKS


OldSalt

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Any one know what red colored non-magnetic rock (In AZ) would make a VLF sound off?

I have crushed up a couple of specimens and found nothing in them. :headphones:

I can put up some pics if needed.

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The fact that it's red tells me it's probably an iron mineral. Could be hematite, limonite,goethite or many others. It could also be a combination.

Here's a link where you enter all the characteristics to help you narrow the search. I've never had any of the ones listed above set off my detector so perhaps a unique composition is responsible. A good picture would be nice.

http://www.mindat.org/advanced_search.php

Steve

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The fact that it's red tells me it's probably an iron mineral. Could be hematite, limonite,goethite or many others. It could also be a combination.

Here's a link where you enter all the characteristics to help you narrow the search. I've never had any of the ones listed above set off my detector so perhaps a unique composition is responsible. A good picture would be nice.

http://www.mindat.org/advanced_search.php

Steve

Thanks Goldfinger, it does look like Red Hematite. My detector is set at 300 khz and it sounded off as positive for gold. A different signal is given for black sand.

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Any one know what red colored non-magnetic rock (In AZ) would make a VLF sound off?

I have crushed up a couple of specimens and found nothing in them. :headphones:

I can put up some pics if needed.

We also have some non-magnetic to highly magnetic Basaltic cinders that get their color from oxidised iron rich minerals. They are abundant around lava flows and cinder cones. Part of the Franconia meteorite strewn field is a hot rock hell due to these cinders. Some of them are totally non-magnetic, an yet they make a VLF scream.

A streak test will probably tell you if your rock is Hematite or not.

http://en.wikipedia.org/wiki/Hematite

Jim

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