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#451

Joshlv
Member
Joined: 10 January 2018
Posts: 31
Member
08 November 2018 09:46 pm

Sorry I should have said hanging rock above nundle nsw

2 users like this post: Wally69, Guessologist

#452

Guessologist
Member
Joined: 06 February 2018
Posts: 69
Member
09 November 2018 04:56 am

Ha! I've learned something today, there's two Hanging Rocks. Chrysoprase it is then, no doubt.


Go Find 40 / White's GMT . Cumulative age of predecimals found so far: ~5360 years

#453

Pat Hogen
Member
Joined: 02 January 2018
Posts: 104
Member
09 November 2018 08:30 am

goldierocks wrote:
Pat Hogen wrote:

Hanging Rock in Victoria? Is nothing sacred? Seriously? Is there any gold there?

According to Carpenter (1897) 77.75 kg of gold was won from the Lady of the Mountains (Ruzicka Hill gold mine, Hanging Rock) from 9tonne of stone.

And yes Wally, it is the leek-green crystalline variety of quartz known as Prase.

Ruznicka was at the Hanging Rock near Nundle, not the one in Victoria (where there is not a trace of gold)

Of course, and so is the Prase outcrop and the coprolite deposit.

Here is an interesting report on Ruzickas Reef, (Lady of the Mountain) -

Networks of vughy, crystalline quartz are present in some of the rocks on the dumps. Two parallel lines of reef may be present.

A block of gold weighing 30kg was won from a thin vein in flinty shales at this locality.

According to the Annual Report for 1882, Ruzickas Reef is synonymous with the Lady of the Mountain; according to Lloyd (1936) they are separate deposits. Records show that 11.2kg gold was found by Ruzickas in Dec, 1881.


Absinthe makes the heart grow fonder

#454

Joshlv
Member
Joined: 10 January 2018
Posts: 31
Member
09 November 2018 08:59 am

Yeah there is also a hanging rock in the blue mountains, I've climbed it.

The closest thing i can find that resembles it is botryoidal chalcedony.
Correct me if im wrong but shouldn't chrysoprase be greenish. Photos may show colour but irl it is white

#455

goldierocks
Member
Joined: 10 January 2015
Posts: 1,047
Member
09 November 2018 02:04 pm

Joshlv wrote:

Yeah there is also a hanging rock in the blue mountains, I've climbed it.

The closest thing i can find that resembles it is botryoidal chalcedony.
Correct me if im wrong but shouldn't chrysoprase be greenish. Photos may show colour but irl it is white

I agree
And there are a hell of a lot of Hanging Rocks, although those are the most famous in oz (one because of the Picnic at Hanging Rock movie in the 1970s


Robert Benchley...
I have kleptomania, but when it gets bad, I take something for it.

#456

Wishfull
Member
From: Yorke Peninsla S.A., SA
Joined: 27 April 2016
Posts: 2,062
Member
09 November 2018 05:24 pm

goldierocks wrote:
Joshlv wrote:

Yeah there is also a hanging rock in the blue mountains, I've climbed it.

The closest thing i can find that resembles it is botryoidal chalcedony.
Correct me if im wrong but shouldn't chrysoprase be greenish. Photos may show colour but irl it is white

I agree
And there are a hell of a lot of Hanging Rocks, although those are the most famous in oz (one because of the Picnic at Hanging Rock movie in the 1970s

Like that film
The house/girls school/ castle was built by a relative of mine. Edmund Bowman. He built it for his fiancée that came out from England. She left him and he drowned in the Port Wakefield river. The place cost £30,000 in 1880.


Ancient 1996 Garret Scorpion gold stinger, Minelab GPX 4500, SDC2300, Detecnix wader Li pinpointer, home made pick, 750 mm Walco pick, understanding wife, most of the time.

3 users like this post: Wally69, MegsyB007, Mackka

#457

Shaza1
Member
Joined: 28 October 2017
Posts: 31
Member
11 November 2018 04:48 pm

Hey everyone
I found this in a creek bed, I have no clue, has anyone got an idea?
Thanks shaz
1541915246_ae809231-a7b6-4dbe-9536-c401b43d1742.jpg
1541915247_5fa4aa20-7285-4615-abc1-c8bbf2e1b14d.jpg
1541915247_70f376e3-cf90-496c-a98e-69a8fab5297b.jpg

1 user likes this post: Wally69

#458

Heatho
Moderator
From: Sydney, NSW
Joined: 29 April 2013
Posts: 12,833
Moderator
11 November 2018 05:05 pm

Hi Shaz, looks like carnelian to me.


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

1 user likes this post: Shaza1

#459

liliane
Member
Joined: 19 October 2018
Posts: 136
Member
11 November 2018 05:54 pm

Hello shaza1, I found a rock like yours last year but I lost it lol , that is a good find keep it , carnelian hetho said so great, what a find, cheers big_smile

1 user likes this post: Shaza1

#460

hannahchikka
Newbie
Joined: 11 November 2018
Posts: 6
Newbie
11 November 2018 06:07 pm

1541922245_screen_shot_2018-11-11_at_6.43.46_pm.jpg
1541919766_screen_shot_2018-11-11_at_6.01.22_pm.jpg

Hi I'm new here.

This rock is black, very smooth, has a part thats grey on it (put it under a bright light and that part you can see through - no colour).
Its streak is white. Its texture is the same as a raw sapphire

Could it be black spinel or black sapphire?

Thanks

Last edited by hannahchikka (11 November 2018 06:44 pm)

#461

liliane
Member
Joined: 19 October 2018
Posts: 136
Member
11 November 2018 08:47 pm

Hello all, I was supposed to take good photos and post here for identification
of some of my rocks, here we go , please if you can identify them for me , I will be truly grateful.
big_smile 1541929376_1-1_1.jpg
1541929410_1-1_2.jpg
1541929430_2.jpg
1541929450_2-2.jpg
1541929471_3.jpg
1541929494_31.jpg1541929530_3-2.jpg1541929552_4-1_1.jpg1541929572_4-1_2.jpg1541929594_5.jpg1541929614_5-1.jpg

thanks and cheers

#462

Dave79
Member
Joined: 30 May 2018
Posts: 523
Member
11 November 2018 08:55 pm

Top 2 definately look like smelter slag. That's the stuff that floats on top of the furnace when ore is roasted to extract the metal.


Prospecting must be like fishing, the big one keeps getting away!

#463

liliane
Member
Joined: 19 October 2018
Posts: 136
Member
11 November 2018 09:00 pm

Hello Dave, thanks, I remember you saying that to me last time, I should not have put them in I forgot, cheers big_smile

#464

hannahchikka
Newbie
Joined: 11 November 2018
Posts: 6
Newbie
12 November 2018 07:34 am

I didn't get an answer ?

#465

Wally69
Member
From: Sydney
Joined: 13 December 2013
Posts: 2,983
Member
12 November 2018 08:00 am

hannahchikka wrote:

I didn't get an answer ?

Looks like a shiny black rock, get some in my sieves at times, they have been tumbled by the river to a high gloss and shine out of the sieve like a sapphire.

Could be wrong though. Try a very strong torch on the stone, if you get a bit of glass showing, it could be corundum(sapphire).

Edit..... i’m having a bad morning...... i see you have been able to shine through. perfect

Last edited by Wally69 (12 November 2018 08:19 am)

#466

Dron
Member
From: Wollongong, NSW
Joined: 06 March 2016
Posts: 231
Member
12 November 2018 08:06 am

Spinel has a 'greyish white' streak wheras corrundum (sapphire) has a white streak.

Corrundum's hardness is 9 and Spinel's hardness is 7.5 - 8. You could try scratching it with a piece of Quartz (hardness 7), if it doesn't scratch then the next step would be to obtain something with a hardness of 8.5 and repeat the text again.

Other possibilities are smoky quartz or cassiterite.


SDC2300 aka "The Birdshot Bandit" + SP01 + Gog Phones. Equinox 800 aka "Johnny kNOXville" + Tyger Snake digger. Wollongong based.

#467

hannahchikka
Newbie
Joined: 11 November 2018
Posts: 6
Newbie
12 November 2018 10:49 am

Thanks guys I will try it out

Last edited by hannahchikka (12 November 2018 10:49 am)

#468

hannahchikka
Newbie
Joined: 11 November 2018
Posts: 6
Newbie
12 November 2018 08:07 pm

1542013624_screen_shot_2018-11-12_at_8.06.20_pm.jpg
This is how it looks compared to the sapphire (I know the one on the right is definitely a sapphire cuz in the bright light it shines blue, green and yellow).
I don't have quartz on me. So I tested it on the sapphire and the sapphire scratched, I tested the sapphire on it and it scratched. It was faint and didn't always work for both of them.

Last edited by hannahchikka (12 November 2018 08:09 pm)

#469

liliane
Member
Joined: 19 October 2018
Posts: 136
Member
12 November 2018 10:53 pm

Hello from Adelaide, hope you are all well, I would like please an answer too lol if you number them from top to bottom, say 1, 2 etc then I will know what stone it is or by colour and details, much appreciated, cheers big_smile

#470

22shells
Member
Joined: 11 September 2014
Posts: 174
Member
15 November 2018 05:51 am

Have found a few of these, wondering if you could call it aquamarine at all or is it just beryl?1542221448_pb151058.jpg

#471

Pat Hogen
Member
Joined: 02 January 2018
Posts: 104
Member
15 November 2018 07:32 am

First I would do a density test on it to determine if it was beryl. If it comes out in the beryl range I would decide whether it was precious enough to do a refractive index test to see what form of beryl it might be, but looking at the crystallization in the stone I am not sure I would go that far unless only for location identification.

Density test is simple enough, do you have scales?


Absinthe makes the heart grow fonder

#472

22shells
Member
Joined: 11 September 2014
Posts: 174
Member
15 November 2018 02:51 pm

Thanks Pat. Yes I have scales. Not sure if I did it right though. I weighed it dry, then weighed it suspended in water by a thread of cotton. Then divided the dry weight by the wet weight. This gave me 2.59. Since it has a small bit of host rock attached which may have affected the result, I tried a different piece and got 2.63. I don't know how to do a refractive index test.

#473

Pat Hogen
Member
Joined: 02 January 2018
Posts: 104
Member
15 November 2018 05:47 pm

Precious Beryl comes in under those densities but that colour does not read well for precious beryl. To do a refractive index one needs to own or find an owner of a refractometer. I do not know of any short cuts for refractive index.


Absinthe makes the heart grow fonder

#474

22shells
Member
Joined: 11 September 2014
Posts: 174
Member
15 November 2018 07:26 pm

Thanks, the guy who cuts my stones might be able to do a refractive index test, I'll ask him next time. That colour, whatever it is, is some of the better stuff- I have other that is worse/ more faded. It seems to come mostly in 2 colours, this type and a more "orangey" type. I find colours hard because I'm colourblind (red/green) which is a disadvantage, but can also be an advantage because sometimes I can see things that don't stand out to people with normal colour vision.

#475

Pat Hogen
Member
Joined: 02 January 2018
Posts: 104
Member
16 November 2018 07:40 am

"... I'm colour blind (red/green) which is a disadvantage, but can also be an advantage because sometimes I can see things that don't stand out to people with normal colour vision", yep, like the numeral in the spaghetti colour chart that the non-colour blind cannot see wink

Blue/ purple is a highlight for the colour blind brigade.

And the "orangey" type is heading to precious beryl.

Last edited by Pat Hogen (16 November 2018 07:41 am)


Absinthe makes the heart grow fonder


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