Index to 2025 Facebook Group Alphabetical Series

I am a member of the Facebook Group New Zealand Lapidary, Rocks, Minerals, Fossils”. Back in 2021, the Administrators invited members to submit photos each week of a stone, mineral or fossil in their collection that starts with a letter of the alphabet. An Index to my 2021 Posts is here. This year, some Group members decided it would be a good idea to repeat a weekly alphabetical series, starting in late July. Below is a list of my contributions as re-posted in TumbleStone Blog, often expanded in minor ways compared to the Facebook originals. I tried to do something different for each letter than I did in 2021, not always successfully.

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A is for Agatised Fossil Bone (Kakanui)

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Large banded argillite, Gemstone Beach.

B is for Banded Argillite (Gemstone Beach)

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C is for Calcite (Calcium Carbonate) (in a Ward Beach fossil oyster stone)

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Chromium in Diopside in Hydrogrossular Garnet?
Other side of stone.

D is for Diopside with Chromium (Gemstone Beach)

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Quartz-veined Gemstone Beach quartzite with epidote.
Other side of veined quartzite.

E is for Epidote (in a Gemstone Beach quartzite)

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Fossil rhodolith in limestone, Seadown Beach, Kakanui.
Other side of stone.

F is for Fossil Rhodolith in Fossiliferous Limestone (Kakanui)

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Granite stone from Papatotara Beach, Te Waewae Bay.
Person on top of Hound Tor.

G is for Granite (Papatotara, Te Waewae Bay)

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Very small hematite poppy jasper.
Other side of stone.

H is for Hematite Poppy Jasper (Gemstone Beach)

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I is for Intrusive Igneous Stone (Gemstone Beach)

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J is for Jasper (Gemstone Beach)

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Iron stained quartz.
Jasper the dog on Kai Iwi Beach.
Jasper looking up at the pigeons sitting on the stack.

K is for Kai Iwi Beach Stone (Iron stained quartz)

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Leithfield Beach find, 2021.
Leithfield Beach stones on a sunny day.
Just south of the carpark, this wastewater pipe, not operational in 2021, has now been dismantled.
Leithfield Beach from the air – https://nz.geoview.info/zip/7446_leithfield#google_vignette

L is for Leithfield Beach “Looker” (Unknown)

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McCracken’s Rest mudstone (argillite), with trace fossils).
McCracken’s Rest – Google Maps streetview.
Looking east from McCracken’s Rest along the curve of Te Waewae Bay towards Gemstone Beach, Monkey Island, and Pahia Hill.
Looking up at the McCracken’s Rest lookout from the beach below.

M is for Mudstone from McCracken’s Rest (Argillite with trace fossils)

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What I refer to as a neutral-hued quartzite, from Kakanui in North Otago.
Source: http://www.topomap.co.nz/NZTopoMap?v=2&ll=-45.156999,170.891817&z=13
The south end of the beach last year.

N is for North Otago Neutral-Hued Quartzite

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White orbed jasper, Gemstone Beach.

O is for Outstanding Orepuki White Orbicular Jasper

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Pink thulite stone found on Gemstone Beach.
Riverton/Aparima Museum, photo taken in 2016.
Gemstone Beach.

P is for Pink (Thulite, Gemstone Beach)

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Kakanui quartzite.
The one that is the subject of this Post.
Thornton’s “Gemstones”, page 34. http://www.onnaturesedge.co.nz/downloads/nzgemstones.pdf

Q is for Quartzite (Kakanui)

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A type of spherulitic rhyolite, Slope Point.
The small mainly stony beach.
More Slope Point beach stones.

R is for (Spherulitic) Rhyolite (Slope Point)

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Large red scoria stone (wet), Kai Iwi Beach.
I’ve found a range of colours of scoria on Kai Iwi Beach.
Early morning, on the way down to Kai Iwi Beach with Jasper.
Scoria top knots on Rapa Nui moai. http://www.researchgate.net/publication/320236368_Using_Structure_from_Motion_Mapping_to_Record_and_Analyze_Details_of_the_Colossal_Hats_Pukao_of_Monumental_Statues_on_Rapa_Nui_Easter_Island/figures?lo=1

S is for Scoria (Kai Iwi Beach)

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Vein of breccia.

T is for a Type of Tiny Tectonic Breccia? (Gemstone Beach)

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U-shaped trace fossil in limestone pebble from near Ure (Waima) River mouth.
Location of Waima (Ure) River mouth, south of Ward. Area in red is where stone was found.
A scattering of lighter-coloured limestone pebbles.
From page 64 of “A Photographic Guide to Fossils in NZ” by H. Campbell et al. (2013).

U is for U-Shaped Trace Fossil Found Near Ure (Waima) River Mouth

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A veined vein?

V is for Veined Vein? (Gemstone Beach)

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From Heather Nicholson’s talk on greywacke. https://www.nelsonrmc.org/uploads/6/4/4/5/64457583/greywacke_v2_copy.pdf
https://teara.govt.nz/en/photograph/9065/greywacke-under-the-microscope
Heather Nicholson did a PhD on greywacke. https://teara.govt.nz/en/speech/9067/heather-nicholson

W is for Wacke (Greywacke, Gemstone Beach)

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Gemstone Beach flow-banded rhyolite, an extrusive igneous stone.
Another Gemstone Beach rhyolite, I think. Found September 2024.
Maybe a Gemstone Beach rhyolite? If so, it’s not flow-banded. Found March 2024.
The most common form of rhyolite found on Gemstone Beach. This one I found in April 2023.

X is for Xcellent Xample of an Xtrusive Igneous Stone on Xmas Eve (Rhyolite, Gemstone Beach)

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Gemstone Beach veined and banded quartz. Yellow, orange, brown and green.
http://www.twinkl.co.nz/resource/t2-e-1999-colour-thesaurus-word-mat-yellow
Kaikoura Coast find – limestone? mudstone? with trace fossil.
Darker hydrogrossular garnet, Gemstone Beach. Yellow and brown.

Y is for YesterYear’s Yellows at Year End (Veined and Banded Quartz, Gemstone Beach)

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Small polished Gemstone Beach amygdaloidal stone.
Specimen of amygdaloidal basalt. http://www.alexstrekeisen.it/english/vulc/amygdales.php
Small polished Gemstone Beach stones.

Z is for Zeolite (In Amygdaloidal Basalt, Gemstone Beach)

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Author: tumblestoneblog

Retired Academic, male, living in the New Zealand countryside near Whanganui with his wife as well as Jasper the dog, Fluffy the cat, Dancer and Penny, the horses, and a shed half-full of stones. Email john.tumblestone@gmail.com.

27 thoughts on “Index to 2025 Facebook Group Alphabetical Series”

  1. Pingback: An Annotated Index of Indexes on TumbleStone Blog, Up-Dated – TumbleStone
  2. Pingback: K is for Kai Iwi Beach Stone – TumbleStone
  3. Pingback: J is for Jasper – TumbleStone
  4. Pingback: A is for Agatised Fossil Bone – TumbleStone
  5. Pingback: B is for Banded Argillite – TumbleStone
  6. Pingback: C is for Calcite… – TumbleStone
  7. Pingback: D is for Diopside (with Chromium) – TumbleStone
  8. Pingback: E is for Epidote – TumbleStone
  9. Pingback: F is for Fossil Rhodolith in Fossiliferous Limestone – TumbleStone
  10. Pingback: G is for Granite – TumbleStone
  11. Pingback: H is for Hematite Poppy Jasper – TumbleStone
  12. Pingback: I is for Intrusive Igneous Stone – TumbleStone
  13. Pingback: L is for Leithfield Beach “Looker” – TumbleStone
  14. Pingback: M is for Mudstone from McCracken’s Rest – TumbleStone
  15. Pingback: N is for North Otago Neutral-Hued Quartzite – TumbleStone
  16. Pingback: O is for Outstanding Orepuki White Orbicular Jasper – TumbleStone
  17. Pingback: P is for Pink – TumbleStone
  18. Pingback: Q is for Quartzite – TumbleStone
  19. Pingback: R is for (Spherulitic) Rhyolite – TumbleStone
  20. Pingback: S is for Scoria – TumbleStone
  21. Pingback: T is for a Type of Tiny Tectonic Breccia? – TumbleStone
  22. Pingback: U is for U-Shaped Trace Fossil Found Near Ure (Waima) River Mouth – TumbleStone
  23. Pingback: V is for Veined Vein? – TumbleStone
  24. Pingback: W is for Wacke – TumbleStone
  25. Pingback: X is for Xcellent Xample of an Xtrusive Igneous Stone – TumbleStone
  26. Pingback: Y is for YesterYear’s Yellows at Year End – TumbleStone
  27. Pingback: Z is for Zeolite – TumbleStone

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