Ages for Nontronite at Treverbyn, Cornwall, England, UK

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of Ma - Ma at this locality

• Locality age

• Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
  Lucy_105	276.9	272.7				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_106	275.9	266.9				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_107	272.7	269.1				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_108	276.3	272.1				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_109a	313	289				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_109b	274.7	272.5				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_110	282	278				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_111a	261.7	253.1	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_111b	269.6	260.6	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_112a	283.2	274.6	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_112b	289.8	280.6				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_113a	270.6	262				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_113b	281.3	272.9				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_114a	266.1	257.7	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_114b	266.1	257.7	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_114c	277.9	268.9	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_114d	282.9	274.1	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115a	284.2	275.2	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115b	289.8	280.6	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115c	283.3	274.3	Muscovite			1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115d	280.8	272.2				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115e	281.6	273				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115f	280.8	272.2				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115g	280.8	272.2				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_115h	280.8	272.2				1189	Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_132b	277.7	269.7				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_132c	324.9	315.3				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_132d	320.4	310.8				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_132e	305.5	296.3				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_132f	263.8	255.4				1190	Imperial Goonbarrow China Clay Works, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_132g	271	262.2				1190	Imperial Goonbarrow China Clay Works, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_138a	277.7	269.1				965	Gunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_138b	278.7	269.5				965	Gunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_138c	276.8	268				965	Gunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_138d	273.9	272.9				965	Gunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_141a	277.1	268.1				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_141b	285.7	277.1				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_141c	282.2	273.6				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_141d	267.1	258.5				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142a	273.2	264.6				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142b	253.9	245.9				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142c	270.2	261.6				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142d	266.2	257.8				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142e	270.6	262				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142f	273.1	264.5				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_142g	273.2	264.6				967	Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_143a	287.1	277.9				1190	Imperial Goonbarrow China Clay Works, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064
  Lucy_143b	296.4	287				1190	Imperial Goonbarrow China Clay Works, Bugle, Treverbyn, Cornwall, England, UK	Bray and Spooner (1983)	EG78_1064