{"id":5894,"date":"2019-12-05T12:31:48","date_gmt":"2019-12-05T12:31:48","guid":{"rendered":"http:\/\/www.deganwyhistory.co.uk\/?page_id=5894"},"modified":"2020-01-21T16:57:26","modified_gmt":"2020-01-21T16:57:26","slug":"the-dolgellau-gold-belt","status":"publish","type":"page","link":"https:\/\/www.deganwyhistory.co.uk\/cy\/the-dolgellau-gold-belt\/","title":{"rendered":"Cadwyn Aur Dolgellau"},"content":{"rendered":"

Ymgynullodd aelodau ac ymwelwyr yng Nghapel Peniel ar Ddydd Iau 21ain Dachwedd 2019 i wrando ar Dr Ron Callender (FRPS) yn rhannu ei arbenigedd eang ar y pwnc o fwyngloddio am aur yng Ngogledd Cymru. Canolbwyntiodd ei sgwrs ar \u201cGadwyn Aur Dolgellau\u201d.<\/span><\/span><\/strong><\/p>\n

Gwariodd Dr Callender rhan helaeth o\u2019i fywyd gweithiol fel gwyddonydd gydag Unilever, ond yn 1983 pan drosglwyddodd i labordy ymchwil Port Sunlight, ymwelodd \u00e2 Gogledd Cymru i olchi aur trwy badell, yn y bryniau. Ar \u00f4l ymddeol, astudiodd am radd mewn hanes y bedwaredd ganrif ar bymtheg ac yna gwariodd 5 mlynedd yn cyfarwyddo ymchwil archeolegol ar y Rhuthr am Aur yn yr Alban yn 1869.Ar yr un pryd trodd ei sylw at fwyngloddiau Gogledd Cymru ac mae wedi cyhoeddi yn eang ar y pwnc.<\/span><\/span><\/p>\n

Dechreuodd y sgwrs gyda Dr Callender yn arddangos map .Mae mwyngloddiau Cadwyn Aur Dolgellau yn dechrau yn y Bermo a dilyn glan ogleddol afon Mawddach hyn at Llanelltyd. Ceir mwyngloddiau pellach ar Fynydd Garn, ger Ganllwyd a hefyd ger y Fawddach yng nghoedwig Coed y Brenin, gyda dwy allgraig (outliers) ar y ffordd i\u2019r Bala.<\/span><\/span><\/p>\n

Mae gan fwyngloddio am gopr a phlwm hanes hir yng Ngogledd Cymru, yn dyddio\u2019n \u00f4l at oes y Rhufeiniaid. Cafwyd hyd i\u2019r aur cyntaf yng Nghwmheisian Dwyreiniol yn 1853 a chafwyd fod llawer o\u2019r mwyngloddiau a gynhyrchodd gopr a phlwm, yn cynnwys aur, yn y pen draw. Rhoddodd ein siaradwr mewnwelediadau hudolus i lawer o\u2019r mwyngloddiau hyn, gan gynnwys rhai adnabyddus fel Clogau a Thrawsfynydd sy\u2019n dal i gynhyrchu aur. Gwelodd ail hanner y bedwaredd ganrif ar bymtheg benllanw cynhyrchu i fwyngloddiau aur Gogledd Cymru ac roedd y sgwrs yn cynnwys lluniau o du fewn i\u2019r mwyngloddiau, ynghyd \u00e2 pheiriannau mathru a mwyndoddi. Mae ein siaradwr yn dynnwr lluniau talentog ac roedd rhai o luniau o du fewn i\u2019r mwyngloddiau yn drawiadol.<\/span><\/span><\/p>\n

\"\"<\/p>\n

Clywsom am dechnegau lleoli ac adennill aur gyda syanid (cyanide) ac arian byw (mercury),ynghyd \u00e2\u2019r broses arnofiad olew (oil flotation) a ddatblygwyd ym Mwynglawdd Glasdir fel dull saff o adennill aur allan o\u2019r graean sy\u2019n dal aur. Mae\u2019r dull yma yn dal i\u2019w ddefnyddio yn UDA. Cawsom ein cyflwyno i ddau gymeriad allan o hanes diweddar o fwyngloddio am aur yn lleol, sef Hugh Pugh a Jack Williams.<\/span><\/span><\/p>\n

Cwblhaodd Dr Callender ei sgwrs trwy ddangos inni gofiannau a gyflenwodd ar fwyngloddiau Foel, Cefn Coch , Berth Lwyd a Chwmheisian. Yna fe atebodd gwestiynau gan gynnwys os yw\u2019n bosibl adnabod tarddiad yr aur. Yn rhyfeddol, yr ateb oedd \u201dIe\u201d. Mae gan aur o ardal arbennig \u201c\u00f4l bysedd\u201d unigryw ac mae\u2019n bosibl adnabod aur o Ogledd Cymru.<\/span><\/span><\/p>\n

\"\"

Dr Ron Callender<\/p><\/div>\n

Sgwrs ddiddorol ac addysgol ac fe werthfawrogodd y gynulleidfa cael arbenigwr o fri fel siaradwr.<\/span><\/span><\/p>\n

<\/a>Addasiad o adroddiad Diane Williams<\/span><\/p>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Ymgynullodd aelodau ac ymwelwyr yng Nghapel Peniel ar Ddydd Iau 21ain Dachwedd 2019 i wrando ar Dr Ron Callender (FRPS) yn rhannu ei arbenigedd eang ar y pwnc o fwyngloddio am aur yng Ngogledd Cymru. Canolbwyntiodd ei sgwrs ar \u201cGadwyn Aur Dolgellau\u201d. Gwariodd Dr Callender rhan helaeth o\u2019i fywyd gweithiol fel gwyddonydd gydag Unilever, ond […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-5894","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nCadwyn Aur Dolgellau - Deganwy History<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.deganwyhistory.co.uk\/cy\/the-dolgellau-gold-belt\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cadwyn Aur Dolgellau - Deganwy History\" \/>\n<meta property=\"og:description\" content=\"Ymgynullodd aelodau ac ymwelwyr yng Nghapel Peniel ar Ddydd Iau 21ain Dachwedd 2019 i wrando ar Dr Ron Callender (FRPS) yn rhannu ei arbenigedd eang ar y pwnc o fwyngloddio am aur yng Ngogledd Cymru. 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