ExpOOs / Maison des Minéraux

Mica schists

Google Translate, mthoraval — 2022-04-11T09:39:41Z

Mica schists Garnets - Groix Island (56)

- Rocks and minerals of «Le Massif Armoricain» OLD

Mica schists

Google Translate, mthoraval — 2022-04-11T09:39:00Z

Mica schists Staurolites – Coray (29)

- Rocks and minerals of «Le Massif Armoricain» OLD

The legend of the stones of Coadry

Google Translate, mthoraval — 2022-04-11T08:56:59Z

The similarity between the stone of Coadry and the Holy Cross was so obvious that it must have been a connection between them in the lore. A thousand years ago there were a pagan temple in Coadry. But one day, St. Candide and Father Ratian came to evangelize the country. The temple became empty of worshipers and fell totally in ruins. But the Lord of Céans, Count Trévalot, saw his castle besieged by his cruel and dangerous rival, the lord Coaforn. The count, in danger, felt his last hours ringing, and as he was devout Christian, he vowed , in case of victory , to build a chapel in honor of Christ. And it was victory ! So the old count made harnessed a chariot with two oxen and drove hitch out of the court of the manor. The oxen stopped their race near the old ruined temple Coadry. So at this point, according to the vow, that will be built chapel of Coadry.

As soon as the workers were there to get the job, that huge brambles that covered the temple had disappeared, the most beautiful flowers were blooming, the cross stone had appeared and a source had sprung, endowed with special medicinal properties that were pilgrims coming from far away... It is said that the chapel was built with the help of a giant of 25 meters high !

In the twelfth century, there was a famine and pilgrims were blamed for the evil. The chapel was burnt down by the mob, but the smoke from the fire had scattered piles of "cross stone", according to the wind direction was then east to west up to Coray.

Two centuries later, we had forgotten the name of the Saint that we prayed in the chapel. So we asked God to which it could be dedicated. The tradition is an old Breton song has said: "These stones, each bearing the cross, the other nails and thorns of the crown."

Consequently, the locals dedicated the chapel to Christ. Pilgrimages resumed in Coadry ; poor sold the cross stones to passing pilgrims. A century ago, they were trading for 0.25 francs (0,25 Gold Franc, of course).

The stones of Coadry should ensure the protection against shipwreck, before rabid dogs, before eye diseases and against the madness.

Pink granite

Google Translate, mthoraval — 2014-03-12T16:10:23Z

Pink granite – Ploumanach (22)

- Rocks and minerals of «Le Massif Armoricain» OLD

Glass-case 10

Google Translate, mthoraval — 2014-03-12T16:07:15Z

Mineralogy of Groix Island, Morbihan (56)

01 – Epidote – Porh-Morvil

02 – Glaucophane and Epidote – Les Chats

03 – Garnets on Chlorite-schist – Les Chats

04 – Garnets on bed of Epidote and Glaucophane (polished section) – Les Chats

05 – Garnets on bed of Epidote and Glaucophane – Les Chats

06 – Glaucophane and Epidote, folds – Saint-Nicolas

07 – Glaucophane – Saint-Nicolas

08 – Fibrous Glaucophane and Epidote – Les Chats

09 – Glaucophane – Les Chats

10 – Glaucophane – Les Chats

11 – Glaucophane and Epidote – Saint-Nicolas

12 – Glaucophane – Les Chats

13 – Glaucophane – Les Chats

14 – Albite and Ripidolite – Inévéli

15 – Albite – Bilhéric

16 – Massive Albite – L'Enfer

17 – Albite and Ripidolite – L'Enfer

18 – Albite and Ripidolite – Les Chats

19 – Albite and Ripidolite – L'Enfer

Glass-case 9

Google Translate, mthoraval — 2014-03-11T17:20:55Z

Mineralogy of Groix Island, Morbihan (56)

01 – Serpentine – Inévéli

02 – Crichtonite on Quartz – Porh-Morvil

03 – Crichtonite on Quartz – Porh-Morvil

04 – Ilmenite – Les Saisies

05 – Hornblende on Amphibolite – Les Chats

06 – Manganese, Pistachite and Pyrolusite – Les Saisies

07 – Chloritoid – Le Gripp

08 – Magnetite on schist – Tonnerre

09 – Black massive magnetite – Signal de Brume

10 – Magnetite and Pyrite – Tonnerre

11 – Fuschite – Bilhéric

12 – Pyrolusite – Bilhéric

13 – Pyrolusite nodules – Gadoéric

14 – Actinolite – Bilhéric

15 – Massive Actinolite – Bilhéric

16 – Pyrite on Talc – Inévéli

17 – Actinolite and Pyrite – Inévéli

18 – Siderite – L'Enfer

19 – Manganese salts – Les Saisies

20 – Sphene – Le Rolaz-Rocheplate

21 – Pseudomorphosis of lawsonite – Nosterven

Glass-case 8

Google Translate, mthoraval — 2014-02-28T16:29:40Z

Manganese dendrites on Aplite – Scrignac (29)

- Rocks and minerals of «Le Massif Armoricain» OLD

Glass-case 11

Google Translate, mthoraval — 2014-02-28T16:25:34Z

Crested baryte – Laize La Ville (14)

- Rocks and minerals of «Le Massif Armoricain» OLD

Glass-case 12

Google Translate, mthoraval — 2014-02-28T16:16:31Z

Baryte – Laize La Ville (14)

- Rocks and minerals of «Le Massif Armoricain» OLD

Glass-case 7

Google Translate, mthoraval — 2014-02-21T13:32:20Z

01 – Wolframite in quartz – Bourg-Blanc (29)

02 – Wolframite in quartz –Montbelleux (35)

03 – Cassiterite and wolframite – Plouguin (29)

04 – Cassiterite in quartz – La-Villeder (56)

05 – Greisen with cassiterite – Gouesnou (29)

06 – Arsenopyrite on Apatite (phosphate) – Coray (29)

07 – Molybdenite in pegmatite – Ploumanach (22)

08 – Wolframite – Plogonnec (29)

09 – Greisen with Molybdenite – Coray (29)

10 – Molybdenite in pink granite – Trégastel (22)

11 – Molybdenite in pink granite – Perros-Guirrec (22)

12 – Molybdenite in pink granite – Jersey

13 – Molybdenite in pegmatite – Jersey

The Wolframite is an ore of tungsten : (FeMn) WO4

The Cassiterite is an ore of tin : SnO2

The Molybdenite is molybdenum disulphide: MoS2